Hosting A Dedicated Server

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Dedicated servers are now downloaded using SteamCMD. This is a command line version of Steam.

You can download it from this page.

The first time you run it it will update and you will be left at a STEAM> console. You will want to log in. You can log into an anonymous account by typing:

 login anonymous

Installing Garry's Mod Dedicated Server

If you want to specify a download folder then before you update enter this command:

 force_install_dir c:\my_garrysmod_server\

You can then install the Garry's Mod DS using the command

 app_update 4020 validate

It will slowly download.

Once it's done you can type quit at the console to exit.


You probably don't want to do that every time you want to install/update a server. Don't worry - it supports command lines too.

 steamcmd.exe +login anonymous +app_update 4020 validate +quit

The development branch

To update your server to the development branch, you'll have to launch your SteamCMD and enter these commands manually:

 login anonymous
 app_update 4020 -beta dev validate

The development branch is updated extremely regularly.


Main article: Linux Dedicated Server Hosting


Here's a useful script that will download SteamCMD into ~/Steam/ then extract and install it - and then install the Garry's Mod Dedicated Server.

 mkdir ~/Steam
 cd ~/Steam 
 tar -xvzf steamcmd_linux.tar.gz
 ./ +login anonymous +force_install_dir ../gmodds +app_update 4020 validate +quit

The server is now available in ~/gmodds/

 cd ~/gmodds/
 ./srcds_run -game garrysmod +maxplayers 32 +map gm_construct


If you get the error message

 ./ line 29: /home/$USER/Steam/linux32/steamcmd: No such file or directory

You are most likely running 64 a bit system and missing 32 bit libraries.

If the output of this command is x86_64, you are running a 64 bit system and need 32 bit libraries.

  uname -m

See this article on the valve wiki. 32-bit libraries on 64-bit Linux systems

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