How to Get Host Every Time on Black Ops 2

Contents

• 1 Source Games
  • 1.1 Usage
  • 1.2 Examples
  • 1.3 Command-line parameters
  • 1.4 Console variables
    • 1.4.1 Some useful console variables
• 2 Goldsource Games
  • 2.1 Usage
  • 2.2 Examples
  • 2.3 Command-line parameters
    • 2.3.1 Useful console variables
    • 2.3.2 Deprecated command-line parameters
• 3 Steam (Windows)
  • 3.1 Command-line parameters
• 4 HldsUpdateTool (Windows), steam (Linux)
  • 4.1 Commands
  • 4.2 Parameters for the update command
  • 4.3 Flags for the update command
  • 4.4 Optional parameters for all commands
• 5 SteamCMD
  • 5.1 Usage
  • 5.2 Command-line parameters
  • 5.3 Commands
  • 5.4 ConVars
  • 5.5 Examples
• 6 Source Dedicated Server
  • 6.1 Command-line parameters
  • 6.2 Console variables
    • 6.2.1 Some useful console variables
  • 6.3 Linux command options in Left 4 Dead (2)
• 7 Half-Life Dedicated Server
  • 7.1 Examples
  • 7.2 Command-line parameters
  • 7.3 Useful console variables
• 8 Troubleshooting the Server Console
• 9 See also

Source Games

These command-line parameters will work with any Source engine games (Half-Life 2, Counter-strike: Source, etc.).

Syntax: hl2.exe <parameter1> <parameter2> <cvar1> <cvar2>

 Note: Parameters are described inside the "<" and ">" characters.

Usage

These options can be used with:

• Hammer editor Run Map dialog.
• Windows shortcuts pointing to hl2.exe directly.
• Windows shortcuts pointing to steam.exe with the proper -applaunch <AppID> specified (see Steam section below).
• Command-line batch script files launching these applications.

Examples

• steam.exe -applaunch 280 -dev -console -sw +sv_lan 1 +map MyMap
• hl2.exe -game cstrike -dev -console -fullscreen +sv_lan 1 +map de_dust

Command-line parameters

Argument	Description
-all_languages	Loads all language files.
-autoconfig	Restores video and performance settings to default for the current hardware detected. Ignores settings inside any .cfg files until this parameter is removed.
-32bit	Forces the engine to start in 32-bit mode. Only useful on 64-bit Operating Systems.
-adapter	Sets the GL graphics adapter. Default is 0.
-allowdebug	Fakes a debugger for phonehome, and is the same as -dev, unless -nodev is specified.
-allowstalezip	Suppresses console warnings from stale.txt existing.
-basedir	Sets the base directory for the game files. On Xbox 360 RFS, this is forced to smb://hostname/game.
-bi	Defines the build identifier ID which is used in phonehome
-bugbait	To do:Is it for Bugbait E3 2003 demo? This lets IsLoadingBugBaitReport return true.
-bugreporterdll	Name of the bug reporter DLL to use
-buildcubemaps	Builds cubemaps when fully loaded into a map, then quits the game.
-ccsyntax	Spew details about the localized strings we load.
-clientport	Sets the client port. Default is 27002.
-collate	Skips everything, just merges the reslist from temp folders to the final folder again.
-conclearlog	Clears the console.log text file on start. Only works if -condebug set.
-condebug	Logs all console output into the console.log text file.
-console	Starts the game with the developer console enabled. Same as having con_enable enabled.
-deathsonly	Supposed to only count deaths while parsing tf2 gamestats, but actually pointless because there is only code for deaths.
-d3d9ex	reduce CPU memory about %40. "csgo" only.
-defaultgamedir	Fallback directory if "-game" is not set. Default is "hl2".
-demo	Enters the game into demo mode. Only works for "hl2" and "portal"
-dev	Enables developer mode. Also disables the automatic loading of menu background maps and stops the quit dialog from appearing on exit.
-debugdxsupport	Writes debug DirectX information as keyvalues to the console as shader devices are loading configuration.
-disallowhwmorph	Same as mat_disablehwmorph 1. Disables HW morphing for particular mods.
-dti	Prints the datatable when being sent
-dumpvidmemstats	Spews video memory statistics to vidmemstats.txt. This forces CModelLoader to quit.
-dvd	Enables strict DVD mode. Allows loading files from DVD only. Xbox 360 only.
-dvddev	Enables developer DVD mode. Allows loading files from a remote path as a fallback as well as the DVD. Xbox 360 only.
-dxlevel <level>	Forces the game to start using specified DirectX API version. Officially supported values are: 60, 70, 80, 81, 90, 91, 95 (recommended), 98 (Xbox 360 only), and 100. After starting the game with this launch parameter, the selected value will be saved for future start ups and video settings will be temporarily reset (but not saved), so it is highly recommended to remove this launch parameter after first launch with it. See mat_dxlevel.
-edit	According to comments, intended to replace -tools. Does nothing except disable all file logging for building reslists.
-endgamevid	If specified startup videos will not be skipped, and EndGameVids.txt will be used instead of StartupVids.txt. This can also be invoked by the command "startupmenu playendgamevid", which bails back to the menu and plays the end game video.
-exit	Quits the game after fully loading into a map.
-filmgrain	Enables the filmgrain screen space effect.
-flushlog	Causes log files to be flushed to disk once per second (rather than after every 4kbytes of log data).
-floathdr	Forces HDR to use float values.
-forcenovsync	Forces vsync to be disabled.
-forcestartupmenu	Forces the background menu map to always load, even if developer mode is active or the game is loading straight to a level.
-forcexboxreconfig	Forces default config settings to be loaded on Xbox 360.
-forever	When you get to the end of the maplist, start over from the top
-fs_log	Starts creating a batch file to copy files at the specified filename. This works on the latest engine branch.
-fs_logbins	Logs binaries to the batch file from -fs_log.
-fs_nopreloaddata	Loads in the precompiled keyvalues data for each type. Works only with dedicated servers.
-fs_target	Sets the target game directory to copy files to, used with -fs_log.
-full_memory_dumps
-fullscreen or -full	Forces the engine to start in fullscreen mode.
-g15	Enables Logitech G15 support. G15 is only supported in SiN Episodes: Emergence. [confirm]
-game	Sets game or mod directory to load the game from. Usually is set by default if not user specified. Default is "-defaultgamedir"'s setting. If -defaultgamedir is not set, "hl2" is used.
-gamestatslogging	Enables game stats logging.
-gamestatsloggingtofile	Enables game stats logging out to a file, gamestats.log. Passing this parameter automatically forces -gamestatslogging.
-gl_enablesamplerobjects	(Linux) Use OpenGL Sampler Objects for better texture preloading
-gl_texclientstorage	(MacOS) Reduce memory usage by relying on GPU memory instead of a host copy
-gamestatstag <tag>	Tags each map reported with the specified tag.
-h <height>	Forces the engine to start with resolution set to <height>. Ex: -h 768
-height <height>	Same as -h
-heapcheck	(Windows only) Check if the heap isent damaged or empty at the initiation of the game and every frame
-heapsize <kilobytes>	Specifies the heapsize (in kilobyte) the game will use. This no longer exists on the Source 2009.
-hideconsole	Forces the console hidden, whatever parameters are passed. This overrides -console, -dev, and all others.
-high	Sets the game's priority to High
-hijack	Take control of an existing instance of the game, if any, instead of complaining about already running.
-host	Sets hostname. On Xbox 360, this sets the host computer name to be used for RFS. Xbox name must be <HostPC>_360.
-hushasserts	Disables a number of asserts in core Source libraries, skipping some error checks and messages.
-hushsteam
-ignoredxsupportcfg	Skips reading DirectX support file, dxsupport.cfg.
-insecure	Disable Valve Anti Cheat (VAC).
-interactivecaster	(CSGO only) Starting your client with this will switch it into camera man mode (reference tv_allow_camera_man_steamid/tv_allow_camera_man_steamid2)
-internalbuild	Causes the bug reporter panel to be drawn as internal
-ip	Does the same as the ipname Cvar
-language %l	Sets the game language to the one specified. (Examples: "english", "german").
-leakcheck	Dumps statistics about memory leaks.
-limitvsconst	Limits the number of vertex shaders to a maximum of 256.
-localcser	Sets a custom gamestats CSER other than the Steam-provided public one (default is steambeta1:27013)
-low	Sets the game's priority to Low
-lowmemworkshop (only in )	Allow updating very large map files on Steam Workshop.
-makedevshots	Used for taking screenshots, causing entities to not fade. Enables the use of the devshots_nextmap concommand
-makereslists	Makes reslists. Need to run with -textmode. Passing a parameter here uses a script file to control more complex makereslists operations (multiple passes, etc.)
-mat_aaquality	Set MSAA quality level, does the same as the Convar mat_aaquality
-mat_antialias	Antialiasing. Can be set to 8, amount past 8 won't sharpen the edges of game world.
-mat_vsync	Enables Vertical Sync
-mat_softwaretl	Enables software vertex processing.
-maxdxlevel	Limits the maximum dxlevel to use. Default is 0.
-maxdownloadfilesizemb	CS:GO 5/1/2014, client launch option -maxdownloadfilesizemb N if clients needs to download even larger files from community servers.
-maxplayers	Set the maximum players allowed to join the server. This does the same as the maxplayers convar, the maximum you can set it to is limited by the game/mod
-minmemory	Set startup memory to mem_min_heapsize ?*1024 * 1024?
-monitorTextureSize	Set the size of the texture used to render point_cameras.
-multirun (only in )	Allows the game to run even if another Source game is already open.  Note: While only implemented in Source 2013, using this while a non-2013 game is already running will work.
-navanalyze
-navforceanalyze
-netspike	Sets the trace threshold to the specified value (the limit of the number of records that will be written to netspike.txt before all records are removed).
-newdialogs	Forces new Steam dialog to be used.
-no_compressed_verts	Disables vertex compression for shaders.
-no_compressed_vvds	Enables thin VVD data, even if the client is not an Xbox 360.
-noassert	Allows attaching to a debugger instead of directly asserting.
-noasync	Disables asynchronous filesystem access.
-noborder	When used with the game set to windowed mode, will make the game act as if in fullscreen mode (no window border).
-nobots	Allows Counter-Strike server hosts to force bots disabled to enforce CPU limits.
-nobreakpad
-noconvert	(xbox360) "No conversions during retail"
-noclearsave	Skips clearing the save directory after restoring a save.
-nocrashdialog	Stop some windows crash message boxes from showing up.
-nodev	Disables -dev and -allowdebug during startup so sv_cheats and developer mode dosent get set.
-nodns	Disable DNS requests and resolving DNS adresses.
-nodttest	Skips datatable testing.
-noff	Disables force feedback for controllers.
-noforcemaccel	Use the Windows mouse acceleration settings. Only works if -useforcedmparms is set.
-noforcemspd	Use the Windows mouse speed settings. Only works if -useforcedmparms is set.
-nogamedll	Do not load the Game DLL, this most likely will cause your game/server to crash
-nogamestats
-nohltv	Disable SourceTV
-noip	Do not bind to an ip and disables all multiplayer support
-nojoy	Disables joystick support.
-NoLoadPluginsForClient
-nomaster	Hides server from master serverlist.
-nomessagebox	Stop various windows error message boxes from showing up
-nominidumps	Dont write minidumps
-nomouse	Disables in-game mouse support.
-nop4	Forces the Engine to bypass Perforce Integration
-nopreload	Forces models to not be preloaded. Takes priority over cl_forcepreload and -preload.
-nopreloadmodels	Same as -nopreload
-nops2b	Disables Pixel Shader 2b support.
-noqueuedload	Disables queued loading of map resources.
-NoQueuedPacketThread	(Linux) No queued packet thread will be created.
-norebuildaudio	Opposite of and overrides -rebuildaudio for the map reslist generator.
-nodefaultmap	(Linux only[confirm]) Supresses the addition of -map
-norfs	Forces Remote Filesystem disabled. Xbox 360 only.
-noshaderapi	Loads a non-existent shader API dll, shaderapiempty.dll. Effectively disables shader and texture loading completely. May be useful with -textmode to load the game quickly since a GUI is not required.
-nosound	Disables sound support
-nosrgb	Disables support for SRGB.
-nostartupsound	Disables menu music (sound/ui/gamestartup*.mp3) to play on startup.
-nosteamcontroller	Disables Steam controller system
-nouserclip	Uses software clipping instead of hardware user clip planes
-NoVConfig	Prevents the filesystem library from running VConfig if it encounters a filesystem error where it cannot find the game content.
-novid	When loading a game with this parameter, the intro video will not play.
-olddialogs	Forces old Windows dialogs instead of new Steam ones.
-override_vpk	Forces actual files to override VPK.
-particles	Sets the number of beam trails to allow (2048 by default, minimum is 512).
-phonehome	If debug mode is also enabled, forces the init of phonehome ?which handles some build information and sends them via netmessages to steam?
-pidfile <pidfile>	Use the specified <pidfile> to store the server pid. Default is srcds.pid[confirm] (Unix/Linux only).
-pixel_offset_x	Sets the pixel offset to translate on the X axis in MatSystemSurface.
-pixel_offset_y	Sets the pixel offset to translate on the Y axis in MatSystemSurface.
-pme	Activate the performance monitoring events code, this again only works on Intel processors newer then PENTIUM4
-port <variable>	Sets port for a listen server. Default is 27015.
-preload	Does the same as the sv_forcepreload Cvar. If -nopreload or -nopreloadmodels, this behaviour is disabled
-primarysound	If surround sound isn't enabled, forces the use of the primary sound buffer
-profile	If using Xbox360 or enabling this, additional debugging information are logged like the map startup time and similar
-publicbuild	Is this build a public one? If not, phonehome will not post information of this build to steam
-random_invariant	Forces the game's random number generator value to be invariant.
-rebuildaudio	Forces rebuild of _other_rebuild.cache (metacache) file at exit for the map reslist generator.
-recapvid	RecapVids.txt will be used instead of EndGameVids.txt. This can also be invoked by the command "startupmenu playrecapvid", which bails to the mainmenu and plays the recap video.
-ref	Sets MATERIAL_INIT_REFERENCE_RASTERIZER on the shader material adapter.
-remote	Sets the remote file path to be used with -dvddev.
-replay	Increases maxplayers by 1 at startup and automatically executes replay.cfg for the server.
-requirecubemaps	If a map dosen't have cubemaps, the game will promt up with "Map X does not have cubemaps!"
-reflectionTextureSize	Set the size of the texture used to render the Water shader's real-time reflection and refraction.
-refresh <rate>	Force a specific refresh rate. Ex: -refresh 60
-refreshrate <rate>	Same as -refresh
-freq <rate>	Same as -refresh
-r_emulate_gl	Emulates OpenGL on Windows, provides a framerate boost for most GPUs
-resizing	Allows resizing the window lower than a specific resolution.
-reslistdir	Default is "reslists", use this to override. Reslist generator only.
-reuse	Reuse network sockets
-rpt	Same as having -condebug, -conclearlog, and -console enabled
-safe	Enables video safe mode, which sets the game to windowed, the width to 640, the height to 480, refresh rate to default, and disables antialiasing.
-shader	Loads a specific shader library instead of depending on hardware. Debug only.
-shaderdll	Loads a different shader dll. Default is shaderapidx9.dll. To do:Is this the same as -shader?
-shadersondemand	Creates shaders on access, helps reduce D3D memory for tools, but causes I/O hitches.
-sillygibs	(Goldsource only) Forces more gibs like skull and others to be spawned all time on NPC's death.
-small	Allow window sizing smaller then 640x480
-sndcachedebug	Prints sound cache debug messages (developer must be enabled to see)
-snoforceformat	Skips sound buffer creation
-soft	Enables Software hardware rendering mode.
-softparticlesdefaultoff	Sets particles to be rendered without feathering (scene depth blending) by default.
-softparticlesdefaulton	Opposite of -softparticlesdefaultoff.
-spewsentences	Spew out vox sentence names during reslist generation
-startmap	Restarts devshot generation at the specified map if resuming from a crash.
-startstage	When running from script file, this starts at specified stage, and sets current work item (default is 0). Reslist generator only.
-steam	Enables Steam support (if the game is launched from Steam, this is enabled by default). Working directory must be Steam directory. Works only for singleplayer games.
-steamlocal	Similar to -steam. Runs Steam in local filesystem mode (all content off HDD), as opposed to remote filesystem mode (requiring Steam backend).
-steamport	Master server updater port. Steam authentication port is this port + 1. (default is 26900)
-strictportbind	If you launch the game with this option it will quit with an error message if it can't bind to the default or specified port.
-sv_benchmark	Enables benchmarking through sv_benchmark_force_start.
-swapcores	Swaps threads for the particle and material systems each init
-tempcontent	Searches for game content in a folder called "_tempcontent" relative to the absolute game path. This option is enabled by default for Portal 1
-testscript <filename>	Loads a .vtest file.
-testshaders	Loads the shader_test library. Debug only.
-testsub
-textmessagedebug	Spews client text messages to console.
-textmode	Runs the game without graphics
-threads	Number of threads to allocate for the thread pool, default is 3
-tickrate	Sets the game tick interval. Disabled in code for TF2 because "server ops are abusing it".
-timedemoloop
-toconsole	Starts the engine directly in the console, unless a map is specified with +map.
-tools	Enables engine tools.
-trackdeletions	Logs what files are marked for deletion in Reslist Generator.
-tvmasteronly	Only one person allowed in HLTV.
-untrusted	CS:GO ONLY, allows the game to launch in "Untrusted Mode".
-usedevshotsfile	Get map list from specified file, default is to build for maps/*.bsp
-useforcedmparms	Allows the use of -noforcemspd and -noforcemaccel.
-usegh	Loads ghostinj.dll to allow support for third party dlls (gamehost)
-uselogdir	Logs various data to logs/(mapname)/*
-usercon	Enable RCON for Counter-Strike: Global Offensive servers
-usereslistfile	Get map list from specified file, default is to build for maps/*.bsp. Reslist generator only.
-usetcp	Disable TCP support
-vcrplayback	Plays back a VCR recording. Nothing is simulated on the server, but all server packets are recorded.
-vcrrecord	Records a client's game and allows you to play it back and reproduce it exactly. To do:how is this different from a demo?
-vguifocus	Enables debug VGUI messages related to input focus.
-vguimessages	Enables debug VGUI messages.
-vxconsole	Waits for Valve Xbox console to initialise. Xbox 360 only.
-vproject	Manually sets the VProject directory to load game content for tools.
-w <width>	Forces the engine to start with resolution set to <width>. Ex: -w 1024
-width <width>	Same as -w
-wavonly	Disables DirectSound and makes the engine attempt to play all sounds in PCM format.
-window	Forces the engine to start in windowed mode
-sw	Same as -window
-startwindowed	Same as -window
-windowed	Same as -window
-xnet_bypass_security	Disables Xbox 360 secure networking, to allow cross-platform testing.
-x <x position>	In borderless windowed mode, determines where the window should be horizontally. Ex: -x 0
-y <y position>	In borderless windowed mode, determines where the window should be vertically. Ex: -y 0
+connect	Console Command
+load	Console Command
+mat_hdr_level	Console Command
+maxplayers	Console Command
+playdemo	Console Command
+port	Console Command
+timedemo	Console Command
+timedemoquit	Console Command

Console variables

• +<console variable> <arg> - Sets the Cvar (or console variable) to the specified setting.

Some useful console variables

Argument	Description
+map <map-name[.bsp]>	Loads the map specified after the engine starts.
+map_background <map name>	Forces a specified background map to be used. Useful for testing custom background maps. To avoid loading standard background maps for speed reasons, use the -dev command-line parameter.
+sv_lan <0/1>	When set to 1, launches the game in LAN mode. Useful to stop players from joining your game from the Internet.
+sv_cheats <0/1>	When set to 1, starts the game with cheats enabled.
+physcannon_mega_enabled 1	Makes Gravity gun a super gravity gun
+cl_showfps <0/1/2/3>	When set to 2, shows the framerate and map name.

Goldsource Games

These command-line parameters will work with any Goldsource engine games (Half-Life, Counter-Strike, etc.).

Syntax: hl.exe <parameter1> <parameter2> <cvar1> <cvar2>

 Note: Parameters are described inside the "<" and ">" characters.

Usage

These options can be used with:

• Hammer editor Run Map dialog.
• Windows shortcuts pointing to hl.exe directly.
• Windows shortcuts pointing to steam.exe with the proper -applaunch <AppID> specified (see Steam section below).
• Command-line batch script files launching these applications.
• Game launch options from Steam's Library.

Examples

• steam.exe -applaunch 70 -dev -console -sw +sv_lan 1 +map MyMap
• hl.exe -game cstrike -dev -console -fullscreen +sv_lan 1 +map de_dust

Command-line parameters

• -game <game> - Specifies which game/mod to run. Default is "valve".
• -dll <name.dll> - Specifies which game DLL to use. Ex: -dll dlls/zbotcz.dll.
• -condebug - Stores console output to "Half-Life\qconsole.log".

   Note: Can be toggled with condebug console command.

• -dev - Enables developer mode.
• -glext - When paired with "-dev" setting, outputs all OpenGL extensions supported by your graphics card.

   Note: Can do the same with gl_dump console command.

• -gl - Sets the rendered to OpenGL.
• -soft - Sets the rendered to Software.
• -full - Forces the engine to start in fullscreen mode.
• -window or -sw or -startwindowed or -windowed - Forces the engine to start in windowed mode.
• -w <width> or -width <width> - Forces the engine to start with resolution set to <width>. Ex: -w 1024.
• -h <height> or -height <height>- Forces the engine to start with resolution set to <height>. Ex: -h 768.
• -stretchaspect - The game by default adds black bars based on your game screen resolution. Use -stretchaspect on your command line if you want the old behavior back (just always fill the screen). Setting "-nofbo" also implies "-stretchaspect".
• -freq <variable> - Force a specific refresh rate when running in fullscreen AND your monitor supports the frequency in question.

   Note: If you don't have a CRT monitor chances are you can't use this option.

• -mousethread - If set we poll the mouse position in another thread running at 100hz by default, to get better movement accuracy. Set the "m_mousethread_sleep" cvar to the number of seconds to sleep between mouse polls to change this rate.
• -joy_advanced - Use advanced joystick options (allows for multiple axes).
• -joy_advr, -joy_advu, -joy_advv, -joy_advx, -joy_advy, -joy_advz - To do
• -nosound - Disables sound support.

   Note: Can do the same with nosound <0 or 1> console command.

• -nocdaudio - Disables mp3 support. Also disallows cd console command to load mp3 tracks.
• -wavonly - Disables DirectSound and makes the engine attempt to play all sounds in PCM format.
• -nointro - Disables intro movies.
• -noip - Disables network support.
• -noipx - Disables IPX support.
• -nojoy - Disables joystick support.
• -nomouse - Disables in-game mouse support.
• -noforcemparms - Forces the engine to use operating system mouse parameters.
• -noforcemaccel - Forces the engine to use operating system mouse acceleration.
• -noforcemspd - Forces the engine to use operating system mouse speed.
• -nofbo - Disables using the new method for rendering.
• -nomsaa - Disables MSAA (Anti-Aliasing), setting "-nofbo" also implies "-nomsaa".
• -noborder - When used with the game set to windowed mode, will make the game act as if in fullscreen mode (no window border).

   Bug: Doesn't hide window border, only control buttons.

• -nodirectblit - Disables direct blitting (Blit is shorthand for "block image transfer" or bit blit).
• -nobots - Disables bots.
• -port <port> - Specifies which port to use for client connections for a listen server. Default is 27015.

   Note: Can do the same with port console command.

• -demoedit - Enables hidden Demo editor.

   Note: Use viewdemo console command to get access.

• -num_edicts <variable> - Sets the entity limit for map/game entities (not temporary entities, which is still locked to 500). 900 is default. 4096 is a good limit, beyond that seems to cause hunk_alloc errors^[confirm]. Both clients and servers need matching values for best compatibility^[confirm].
• -heapsize <kilobytes> - Specifies the amount of heap(or free store - cache, an area of memory used for dynamic memory allocation) the engine will use. Minimum value is 14336(14 MB). Maximum value is 131072(128 MB). By default this is set to 40960 (40 MB) and automatically adjusted to suit your system.

   Note: Low value causes "Unable to allocate X.X MB" exit error.

• -zone <bytes> - Specifies the amount of Bytes of memory for use with the console system.

   Note: Low or very high value causes Z_Malloc exit error.

• -exec <file> - Executes specific config file immediately after the engine is loaded.
• +<console variable> <arg> - Sets the Cvar (or console variable) to the specified setting.

Useful console variables

• +_setgamedir <game> - Specifies which game/mod to run.
• +_setrenderer <variable> - Sets the rendering mode. Available parameters are opengl and software.

   Note: Parameter D3D is deprecated.

• +_setvideomode - To do
• +_set_vid_level <0 or 1> - Toogles "Low video quality".
• +_setaddons_folder <0 or 1> - Toogles "Allow custom addon content".
• +_sethdmodels <0 or 1> - Toogles "Enable HD models if available".
• +clientport <port> - Specifies which port to use to communicate with a server. Default is 27005.
• +gg <demoname> or +cl_gg 1 +playdemo <demoname> - Runs the demo in Game Gauge mode. This is a benchmark utility that runs through a demo as fast as possible and stores the framerate in the file fps.txt in the GameMod directory.
• +log on or +log off - Toogles logging before the engine loads config files.

Deprecated command-line parameters

• -console - Enables console. Can be opened either from menu (button in top-left corner in old Half-Life builds or button in main menu in new builds), or by pressing tilde (~) in-game.

   Note: Always enabled by default.

• -toconsole - Opens the console right when the game is launched.

   Note: No longer works.

• -gldrv <driver name> - Selects the GL Driver. The two choices are "Default" and "3dfxgl.dll".

   Note: No longer works.

• -d3d - Sets the rendered to Direct3D.

   Note: Removed.[1]

• -vid_mode <variable> or -vt <variable> - Sets the rendering mode. Available parameters are gl and software.

   Note: No logner works. Use -gl, -soft or -d3d(see above) instead.

• -16bpp - Forces 16-bit color mode (bit depth).

   Note: Not allowed.

• -32bpp - Forces 32-bit color mode (bit depth).

   Note: Enabled by default.

• -nowinmouse - Don't capture mouse in-game.

   Note: Renamed to -nomouse.

• -gamegauge <demoname> - Runs the demo in Game Gauge mode. This is a benchmark utility that runs through a demo as fast as possible and stores the framerate in the file fps.txt in the GameMod directory.

   Note: Use console commands instead.

• -numericping - Displays ping in server browsers in milliseconds instead of dots.

   Note: Enabled by default.

• -particles <variable> - The number of particles for which to set aside buffer space.

   Note: No longer works.

• -nosierra - Disables Sierra logo on GoldSrc games that have it.

   Note: Only works on retail editions of Half-Life; removed when it was transferred to Steam.

• -noaff - Disables setting of thread affinity.

   Note: No longer works.

Steam (Windows)

These command-line parameters work when launching the Steam application (steam.exe) under Windows.

Command-line parameters

Argument	Description
-applaunch <appID> [launch parameters]	Launches an Game or Application through Steam.
-cafeapplaunch	Launch apps in a cyber cafe context (Forces apps to be verified / validated before launch).
-clearbeta	Opts out of beta participation (in case for some reason it can't be done via settings).
-complete_install_via_http	Run installation completion over HTTP by default.
-console	Enables the Steam debug console tab.
-ccsyntax	Spew details about the localized strings we load.
-debug_steamapi	Enables logging of Steam API functions.
-dev	Sets the 'developer' variable to 1. Can be used to open the VGUI editor by pressing F6 or VGUI zoo by pressing F7. Intended for skin development, also enables the debug console tab.
-fs_log	Log file system accesses.
-fs_target	Set target syntax.
-fs_logbins	Log the binaries we load during operation.
-forceservice	Run Steam Client Service even if Steam has admin rights.
-gameoverlayinject	Sets the method how GameOverlay is injected.
-install <path>	Install a product from a specified path (e.g. "D:" for the DVD-ROM drive if D: is one).
-installer_test	Changes installing a retail game to emit all files to install_validate/ folder instead of to the steam cache.
-language <language>	Sets the Steam language to the one specified. (Examples: "english", "german").
-login <[username]|anonymous> [password]	Logs into Steam with the specified Username and Password combination. Note: Steam must be off for this to work.
-lognetapi	Logs all P2P networking info to log/netapi_log.txt.
-log_voice	Writes voice chat data to the logs/voice_log.txt file.
-noasync	Don't use async file operations, run them synchronous instead.
-nocache	Starts steam with no cache (Steam must be off for this to work properly).
-nofriendsui	Prevents the friends list window from showing automatically upon start.
-noverifyfiles	Prevents from the client from checking files integrity, especially useful when testing localization.
-no-browser	Steam's description for this parameter says it "unconditionally disables CEF". CEF stands for Chromium Embedded Framework, which Steam uses for its built-in web browser components (including the in-game overlay browser), and also for WebViews used by the new Panorama-based friends/chat UI, and Library. Using this option will —among other things— disable the new Library UI, and restore the old friends list and chat UI. However, it won't restore the old Libray UI.
-no-dwrite	Forces vgui to use GDI text even if DWrite support is available.
-script <file name>	Runs a Steam script. All scripts must be in a subdirectory of the Steam folder called test scripts (Steam must be off for this to work).
-shutdown	Shuts down (exits) Steam.
-silent	Suppresses the dialog box that opens when you start steam. It is used when you have Steam set to auto-start when your computer turns on. (Steam must be off for this to work).
-single_core	Force Steam to run on your primary CPU only.
-tcp	Forces connection to Steam backend to be via TCP.
-voice_quality	Sets audio quality, range [1,3].
-voicerelay	Only allow 'relay' connections for voice (testing).
-tenfoot	Start Steam in Big Picture Mode.

HldsUpdateTool (Windows), steam (Linux)

Syntax: hldsupdatetool -command <command> [parameters] [flags]

Commands

• -command update - Install or update HLDS.
• -command version - View installed versions.
• -command list - View available games.

Parameters for the update command

• -beta <betaname> - Name of the beta (optional parameter for taking part in a beta test)
• -game <game> - The name of the game to install (see enumeration).
• -dir <installdir> - HLDS Install directory (if dir not specified, will use value from last run of tool).

The following parameters are only needed to access limited content.

• -username <username> - Steam account username
• -password <password> - Steam account password

Flags for the update command

• -verify_all - Verify all HLDS files are up to date.
• -retry - Automatically retry every 30 seconds if the Steam Network is busy.
• -remember_password - Remember password (if a username is supplied).

Optional parameters for all commands

• -nobootstrapupdate - Do not check for updates to the update tool

SteamCMD

The Steam Console Client or SteamCMD is a new tool to install and update dedicated servers using a command line interface. It only works with games that have switched over to the SteamPipe content system. Eventually all Steam games will switch from HLDSUpdateTool to this.

Syntax: steamcmd.exe <parameter1> <parameter2> <cvar1> <cvar2>

 Note: Parameters are described inside the "<" and ">" characters.

To view the most up to date version of SteamCMD commands visit this GitHub repo: https://github.com/dgibbs64/SteamCMD-Commands-List

Usage

• steamcmd.exe +COMMAND1 [ARG] +COMMAND2 [ARG]
• steamcmd.exe +runscript SCRIPTFILE

Command-line parameters

To do

Commands

Argument	Parameter(s)	Description
api_logging	<enabled> <verbose>	Enable/disable verbose API logging in SteamCMD
app_build_all_depots	[-desc <text>] -depotconfigpath <folder> -contentroot <folder> -buildoutput <folder> <appid>	Build all depots for one app
app_dlc_status	app_status <appId> <dlcId>
app_info_print		Dumps app info for appID
app_info_print		Dumps app info for appID
app_info_request	<AppID>	Issue an appinfo request for the given appid. Does not wait for results from the server.
app_info_update	[0|1]	Trigger app info update, optionally for update all
app_license_request	<AppID>	Requests a free licenses for this app if not already owned.
app_run	<AppID>	Launches the app.
app_set_config	<AppID> <key> <value>	Sets a config value for given app.
app_set_update_flag	<appId>
app_status	<appId>
app_stop	<appid> [force:0|1]	Stop this running app
app_uninstall	[-complete] <appId>
app_update	<appid> [-validate] [-language <lang>] [-beta <betaname>] [-betapassword <pwd>]	Make sure a Steam application is up-to-date
app_update_cancel	<EAppUpdateError>
apps_installed
apps_running		Displays information about running games tracked by Steam
async_disconnect		Async disconnect
build_installer	<project file> <target folder> [beta key] [beta pwd]
ceg_wrap	<appid> <orig filename> <stripped filename> <strips filename>	Upload executable to back end for CEG wrapping
cm_force_change		Change CM List
device_authorize_status		Prints device authorization status
download_depot	<appid> <depotid> [<target manifestid>] [<delta manifestid>] [<depot flags filter>]	Download a single depot
download_sources		Dumps list of download sources
drm_wrap	<appid> <input filename> <output filename> <toolname> <flags>	Upload executable to back end for DRM wrapping
dump_scheduled_functions		Displays internal Steam function callback timers
exit		Stops Steam client console
find		Find substrings in console commands
force_install_dir	<directory>	Sets the directory to install the server in
get_download_throttle
help		Show help information
info		Dump various Steam info
install_folder_list		List all mounted Steam volumes
licenses_for_app	<appid>	Shows active licenses for appid
licenses_print		Display users's Steam3 licenses
log_callbacks	<first callbackID> [last callbackID]
log_ipc	[verbose] <filter>	Enables IPC logging. Specifying "counts" or "verbose" is optional, defaulting to counts.
login	[<password>|anonymous] [<Steam guard code>]	Login to Steam
logon		See "login"
logoff		Disconnect from Steam
logout		See "logoff"
manifest_dump	<filename>
mem_stats		Dump memory stats
net_msgdump		Dumps list of sent net messages
net_msgspew		Spews sent net messages
p2p_info		Displays the current state of the P2P networking subsystem.
package_info_print		Dumps package info for packageID
quit		Stops & close Steam client console
render_ipc_connections
run_app_build	[-preview] [-desc <text>] <appbuildfile>	Run app depot build as specified in appbuildfile
run_app_build_http		Alias for run_app_build
runscript	<script file, such as TXT>	Runs a console command script
set_download_throttle	<Kb/s> <bPersistent = false>
set_spew	<group> <level> <logLevel>	Set spew levels for the given group
set_spew_level	<SpewLevel LogLevel>	Sets spew and log level for all groups
set_steam_guard_code		Authorize this computer by adding the Steam Guard email code
sign_install_script	<appid> <input filename> <output filename>	Upload install script to back end for signing
test_dropcon		Tests dropping a connection
test_failnextconnect		Tests failing the next connection
upload_controller_config	<appid> <filename>	Upload controller config to cloud
user_friends		Dumps list of friends
verify_chunk_store	<appid> <depotid> <datafile>	Run app depot build as specified in appbuildfile
verify_vpk	<datafile>	Verifies content of given VPK
voice_game_usage		Displays information about the game's use of Steam voice
workshop_build_item	<build config filename>	Build a workshop item
workshop_create_legacy_item	<appid> <workshop file>	Build a legacy workshop item
workshop_download_item	<appid> <PublishedFileId>	Download a workshop item
workshop_status	<appId>

ConVars

• app_info_http_min = "0"  :
• app_info_http_num_sockets = "8"  :
• AsyncFileIODisableWrite = "0"  :
• AsyncFileIOExpectOutstandingIO = "16"  :
• AsyncFileIOForceGenericIO = "1"  :
• AsyncFileIOMaxPending = "128"  :
• AsyncFileIOReadHandleCache = "32"  :
• AsyncFileIOWriteHandleCache = "32"  :
• batterypercent = "0"  :
• batterytime = "0"  :
• bCheckForFreeGamesOnLogin = "0"  :
• bCheckUGCIntegrity = "1"  :
• @bContentManifestUseProtobufs = "1"  :
• @bCSClientRateLimitUseDelays = "0"  :
• @bCSForceNoCache = "0"  :
• @bDepotBuilderReadBufferSizeKB = "8192"  :
• @bDepotBuilderUnbufferedReads = "1"  :
• bDisableTenFootOverlay = "0"  :
• @bEnableMovieRecording = "0"  :
• @bEnableOfflineLogonTicket = "1"  : If true, an offline logon ticket will be requested during logon if none is cached
• @bEnableSpewThrottle = "1"  :
• bEnableSubscribedFileListCache = "1"  :
• bFinishStagedDepotVersions = "1"  :
• @bForceStreamUnsupportedApp = "0"  :
• @bLANPeerConnectionTimeoutSec = "5"  :
• bLogLegacyDiskDetails = "0"  :
• @bMsgErrorDump = "0"  :
• @bRequireOfflineLogonTicket = "0"  : If true, a valid offline logon ticket is required when logging in in offline or no connection mode
• @bRequireSignedParentalSettings = "1"  : If true, a valid set of signed parental settings is required when logging in in offline or no connection mode
• broadcast_upload_drop_sec = "6"  :
• broadcast_upload_update_sec = "3"  :
• bSteam3LimitedUserEnable = "1"  :
• bSteamLoaderEnable = "1"  :
• bSubscribedFilesDecompressOnClient = "1"  :
• bSubscribedFilesPollForUpdates = "0"  :
• bSubscribedFilesUseRangeRequests = "0"  :
• bVerifyAllDownloads = "0"  :
• cAppUpdateWorkingSetMB = "128"  :
• @cbPartnerUploadChunkSize = "1000000"  : Chunk size to use for POSTing partner uploads
• @cCSClientMaxNumSocketsPerHost = "8"  :
• @cDepotBuilderFileChunkingThreads = "4"  :
• cFileValidationMaxLog = "100"  :
• ClientStatsUploadRateSeconds = "10"  :
• @cMaxContentServersToRequest = "20"  :
• @cMaxInitialDownloadSources = "-1"  :
• @cNetEncryptionHandshakeWorkMax_HighPri = "8000"  :
• @cNetEncryptionHandshakeWorkMax_LowPri = "2000"  :
• @cNetEncryptionHandshakeWorkMax_MedPri = "4000"  :
• countrycode = ""  :
• cPreallocateMinimumSizeKB = "256"  :
• @csecCSRequestProcessorTimeOut = "300"  :
• @csecFavoriteGameAccountCacheTime = "86400"  : Control how often we refresh the account IDs in the game server favorites list
• @csecIncomingDataRatePeriod = "1"  :
• csecManifestDownloadTimeout = "120"  :
• @csecUpdateTargetNumConnectionsEpoch = "10"  :
• @cSecUploadDownloadRates = "300"  :
• @CSInterfaceProxyPassword = ""  :
• @CSInterfaceProxyUsername = ""  :
• @cUDPSendRetries = "8"  :
• @CustomBinaryRequestRetryTimes = "20"  :
• @DepotBuilderAppInfoTimeout = "120"  :
• @DepotBuilderConfigRoot = "./depotscripts" :
• @DepotBuilderContentRoot = ""  :
• @DepotBuilderMaxParallelUploadChunks = "24"  :
• @DepotBuilderNoReslist = "0"  :
• @DepotBuilderNumHTTPSocketsToMDS = "12"  :
• @DepotBuilderOutputRoot = ""  :
• @DepotBuilderParallelUploadChunks = "6"  :
• @DepotBuilderProgressTimeout = "1000"  :
• DepotDownloadProgressTimeout = "120"  :
• DepotReconstructionLowPrio = "1"  :
• DepotReconstructionNumIOThreads = "1"  :
• DepotUseAlternatingReadWrite = "1"  :
• developer = "0"  :
• @EnableUDPHistory = "0"  :
• @fDownloadRateImprovementToAddAnotherConnection = "1.2"  :
• findbestcellstartupdelay = "600"  :
• @fMinDataRateToAttemptTwoConnectionsMbps = "0.5"  :
• @GCNameOverride = ""  :
• @IOCPGetCompletionBatchSize = "1"  :
• @LocalContentServer = ""  :
• log_files_always_flush = "0"  :
• log_matchmaking_callbacks = "0"  :
• @MaxOutstandingSendThreadItem = "1000"  :
• mic_autogain = "16000"  : automatic gain control level for microphone input
• mic_inputfile = ""  : causes voice data to be read from the specified file instead of from the microphone
• mic_outputfile = ""  : causes microphone data to be written out to the specified file
• musiclogging = "0"  :
• nBroadcastSessionHearbeatSec = "120"  :
• nBroadcastSessionMaxDropFrames = "100"  :
• nClientBackgroundAutoUpdateTimeSpreadMinutes = "0"  : Number of minutes to spread background auto-updates out over
• nClientCMUDPPingTimeGoodEnoughThresholdMS = "50"  :
• nClientCMUDPPingTimeoutUseGoodEnoughMS = "250"  :
• nCloudDownloadMinIntervalSec = "60"  :
• nCloudFileCompressionMinFileSizeKB = "16"  :
• nCloudFileCompressionMinFileSizeKBSharedFile = "128"  :
• nCloudFileCompressionPercentageMin = "10"  :
• nCloudFileCompressionPercentageMinSharedFile = "50"  :
• nCloudSyncIntervalSec = "30"  :
• nCloudUploadMinIntervalSec = "1800"  :
• nContentStatsReportInterval = "72"  : In Hours
• @nCSClientRateLimitKbps = "0"  :
• @nDownloadLANChunkCacheSizeMB = "128"  :
• @nDownloadLANPeerGroup = "0"  :
• @net_backlog_bytes_allowed = "12000000"  :
• @net_backlog_time_allowed_sec = "5"  :
• @NetConnectionBufferMsgLimit = "1000"  : Max # of message that will be buffered into a single zipped packet
• @NetConnectionBufferThreaded = "1"  :
• net_incomingcheck = "1"  :
• @net_loopback = "1"  :
• net_maxresendsperframe = "32"  :
• @nLANPeerRateLimitKbps = "0"  :
• @nNetConnectionBufferZipLevel = "1"  :
• @NoPromptForPassword = "0"  :
• @nParentalSettingsLogLevel = "4"  : Control the amount of spew written to the parental log file
• nProductInfoUpdateInterval = "900"  :
• @nSpewThrottleNagFrequencyMs = "5000"  :
• [email protected] = "1000"  :
• @nSpewThrottleResumeThreshold = "3"  :
• @nSpewThrottleTriggerThreshold = "10"  :
• @nSpewThrottleUnconditionalResumeMs = "5000"  :
• @nSpewThrottleUnconditionalTriggerCount = "50"  :
• nSubscribedAutoDownloadMaxSimultaneous = "8"  :
• @nTCPLargeSendBufSizeMB = "16"  :
• p2p_connecttimeout = "15"  :
• p2p_unusedtimeout = "120"  :
• rtime32EarliestSubscribedFileToDownload = "1348857570" :
• @sCSDSVirtualHostHeader = ""  :
• ServerBrowserPingSurveySubmitPct = "5"  :
• @ShutdownOnFailedCommand = "1"  : Exit steamcmd immediately upon any failed build-related command
• spew_controller_loss = "0"  :
• @sSteamCmdForcePlatformBitness = ""  : Must be one of: [32 | 64]
• @sSteamCmdForcePlatformType = ""  : Must be one of: [windows | macos | linux]
• @strCSNoCacheHeader = "no-cache"  :
• @StreamClientArgs = ""  :
• testappcloudpaths = "0"  :
• uForcePreloadApp = "0"  :
• UGCCDNReportPct = "100"  :
• voice_autogain = "0"  :
• voice_minabs = "0.15"  :
• voice_minavg = "1.0"  :
• voice_outputdevice = "0"  : 0=>Miles 1=>XAudio2
• voice_outputfile = ""  : causes output from voice system to be written out to the specified file
• voice_preprocess = "1"  : enables voice cleanup on incoming microphone data
• voice_quality = "4"  :
• workshop_items_cache_days = "14"  :
• workshop_items_update_interval = "900"  :

Examples

• steamcmd(dot)exe +login <username> <password> +force_install_dir <path> +app_update <appid> -validate

Source Dedicated Server

Command-line arguments for the Source Dedicated Server executable (srcds.exe, srcds_run)

Command-line parameters

-allowdebug

(Same as -debug ?)

-autoupdate

Autoupdate the game. Requires -steam_dir and -steamcmd_script to be set (Linux/Unix only).

-binary <binary>

Use the specified binary (no auto detection) (Linux/Unix only).

-console

SrcDS will run in console mode (Windows only).

-debug

Run debugging on failed servers if possible. Requires -gdb to be set ^[confirm]

-debuglog <logname>

Log debug output to this file (Linux/Unix only).

-dev

Show developer messages.

-fake_stale_server

Skip check game version from steam and goes straight to out-of-date state

-game <game or path>

Specifies which game/mod to run. Accepts either a path to a gameinfo.txt, or one of these pre-set values.

-gdb <gdb>

Use <dbg> as the debugger of failed servers (Linux/Unix only).

-help

 ? (Linux/Unix only).

-insecure

Will start the server without Valve Anti-Cheat.

-ignoresigint

(Linux/Unix only) Ignore signal INT (prevents CTRL+C quitting).

-ip

Specifies the address to use for the bind(2) syscall, which controls on which IP addresses the program is reachable on. It must either be a local address (an addresses of the host it runs on) or 0.0.0.0 (the wildcard). This has nothing to do with externally-visible addresses in NAT setups.

-maxplayers <number>

Specifies how many player slots the server can contain. (CSGO Maxplayers is deprecated, set it in gamemodes_server.txt or use -maxplayers_override instead.)

-nobots

Disable bots.

-nohltv

Disables SourceTV and closes its port (usually 27020).

-norestart

Won't attempt to restart failed servers.

-notrap

(Linux/Unix only) Don't use trap. This prevents automatic removal of old lock files.

-port

The port the server advertises to clients.

-steam

Use this (along with -console) when you are running the version of SRCDS downloaded through Steam^[confirm]. Original Description "Quit on steam update failure"

-steamcmd_script <path>

Path to the steam script to execute. Example: ~/Steam/csgo_ds.txt (Linux/Unix only^[confirm])

-steamerr

Quit on steam update failure (Linux/Unix only).

-steamuser

Steam user ID? (Linux/Unix only).

-steampass

Steam Login Password? (Linux/Unix only).

-steam_dir <path>

Dir that steam.sh resides in. Example: ~/Steam (Linux/Unix only)

-tickrate <number>

Specifies Server-Tickrate (for more info see Source Multiplayer Networking). This doesn't exist on TF2, CSS, L4D, and L4D2.

-timeout <number>

Sleep for <number> seconds before restarting a failed server.

-dumplongticks

Generate minidumps when there are long server frames

-usercon

Enables RCON for CS:GO Servers

Console variables

• +<console variable> <arg> - Sets the Cvar (or console variable) to the specified setting.

Some useful console variables

• +hostname "Hostname" - Specifies the name of the server (Spaces between words won't work here!).
• +ip - Specifies the IP when multiple network cards are installed (Old, but still works).
• +map <map> - Specifies which map to start.
• +maxplayers <number> - Specifies how many player slots the server can contain (Old, but still works).
• +hostport <port> - Specifies the host port (Port specification before -port was added, but can still be used).
• +clientport <port> - Specifies the client port (The port the server advertises to clients, the same as -port and clientport in console)
• +sv_lan <0/1> - If set to 1, server is only available in Local Area Network (LAN).

Linux command options in Left 4 Dead (2)

The linux version of Left 4 Dead and Left 4 Dead 2 dedicated server added extra server commands.

As part of the forking functionality mentioned below, the server parameters support substitution. For instance, if you specify +exec autoexec##.cfg, then the first server will execute autoexec01.cfg, the second autoexec02.cfg, and so on.

• -netconport <number> - Creates a remotely accessible server console on the specified port. This can be connected to with telnet or similar applications, and allows controlling of the server as if the commands were being typed in at the console
• -netconpassword "password" - It set, users must type PASS "password" to use the remote console described above
• -fork <number> - Starts up the specified number of instances as subprocesses at once. They will each use the first available port number at 27015 or above.

Half-Life Dedicated Server

These command-line parameters are used with hlds.exe for Goldsource (Half-Life) games.

Syntax: hlds.exe <parameter1> <parameter2> <cvar1> <cvar2>

 Note: Parameters are described inside the "<" and ">" characters.

Examples

• hlds.exe -console -game cstrike +sv_lan 0 +maxplayers 22 +map de_dust2
• ./hlds_run -game cstrike -autoupdate -pingboost 2 -port 27016 +maxplayers 20 +map de_dust2

Command-line parameters

• -condebug - Stores console output to "Half-Life\qconsole.log".

   Note: Can be toggled with condebug console command.

• -dev - Enables developer mode.
• -autoupdate - Autoupdate the game. Requires -steam_dir and -steamcmd_script to be set (Linux/Unix only)
• -console - HLDS will run in console mode (Windows only).
• -game <game> - Specifies which game/mod to run. Default is "valve".
• -dll <name.dll> - Specifies which DLL to use. Ex: -dll addons\metamod\dlls\metamod.dll.
• -nomaster - Disable communication with Master server. Use this parameter if you do not want your server to be listed in Server Browser.
• -insecure - Disables Valve Anti-Cheat technology.
• -port <port> - Specifies which port to use for client connections. Default is 27015.

   Note: Can do the same with port console variable.

• -sport <port> - Specifies the VAC port the server should use. Default is 26900.

   Note: You only need to change -sport if VAC connections fail through the primary port.

• -noip - Disables network support.
• -noipx - Disables IPX support.
• -tos - Enables the LOWDELAY TOS header in the udp/ip packets the server generates. (Linux only)
• -nobreakpad - Let plugin authors still get old style minidumps if they need it (win32 only)
• -num_edicts <variable> - Sets the entity limit for map/game entities (not temporary entities, which is still locked to 500). 900 is default. 4096 is a good limit, beyond that seems to cause hunk_alloc errors^[confirm]. Both clients and servers need matching values for best compatibility^[confirm].
• -heapsize <kilobytes> - Specifies the amount of heap(or free store - cache, an area of memory used for dynamic memory allocation) the engine will use. Minimum value is 14336(14 MB). Maximum value is 131072(128 MB). By default this is set to 40960 (40 MB) and automatically adjusted to suit your system.

   Note: Low value causes "Unable to allocate X.X MB" exit error.

• -zone <bytes> - Specifies the amount of Bytes of memory for use with the console system.

   Note: Low value causes Z_Malloc exit error.

• -maxplayers <number> - Sets the maximum number of players that will be able to join your server.

   Note: Can do the same with maxplayers console variable.

• -sys_ticrate - Overrides sys_ticrate cvar.
• -exec <file> - Execute specific config file immediately after the engine is loaded.
• +<console variable> <arg> - Sets the Cvar (or console variable) to the specified setting.

Useful console variables

• +hostname "Server Name" - Specifies the name of the server.
• +ip <address> - Specifies the IP when multiple network cards are installed. Required for VAC2 operation.

   Note: Usually you do not need to specify this.

• +map <map> - Specifies which map to start with.
• +sv_lan <0/1> - If set to 1, server is only available in Local Area Network (LAN).
• +mapchangecfgfile <file> - Like Server.cfg, ran after every round change, before Plugins are started.
• -pingboost <1/2/3> - Selects between optimized HLDS network code stack. Set this on 2 usually reduces latency toward 1ms without loss of activity input packets.

Troubleshooting the Server Console

Specifying a map is necessary, otherwise the server is not ready to accept connections from players to your server. You may wish to specify the "ip" and "port" parameters if you are experiencing problems.

 Note: This only applies to dedicated servers.

See also

Developer Console

How to Get Host Every Time on Black Ops 2

Source: https://developer.valvesoftware.com/wiki/Command_Line_Options

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