Custom Command

Custom Command

(in Game Menu and Game Config)

Overview

Launch custom programs before, after or instead of the game itself. You can run Windows or Linux executables (including AppImages and scripts), even when running as a Compatibility Tool you can still launch native Linux executables which can allow you to use native game launchers for games on Steam that might only have a Windows build.

When enabled you can start custom programs easily with the following per-game config options:

• USECUSTOMCMD: set to 1 to start the custom command CUSTOMCMD
• CUSTOMCMD: start this custom command
• CUSTOMCMD_ARGS: start CUSTOMCMD command with those args
• ONLY_CUSTOMCMD: set to 1 to only start CUSTOMCMD and not the game command itself
• FORK_CUSTOMCMD: set to 1 to fork the custom CUSTOMCMD into the background and continue with starting %command%
• CUSTOMCMDFORCEWIN: set to 1 to force the program to run with Wine/Proton and ignore SteamTinkerLaunch's platform detection
• INJECT_CUSTOMCMD: set to 1 start the custom CUSTOMCMD after the game exe has started (optionally starting another INJECTWAIT seconds)

INJECT_CUSTOMCMD overrides both ONLY_CUSTOMCMD and FORK_CUSTOMCMD. For injecting dlls into a game exe the IGCSInjector function can be used instead of INJECT_CUSTOMCMD

If only USECUSTOMCMD is enabled, but CUSTOMCMD is empty, a requester will open where a executable file can be selected. The selected file will then be automatically written into the Game Config.

If string CUSTOMCMD can't be found as file in either PATH, in game dir or as absolute filepath the requester will open as well

Note: See also the One Time Run option for quickly starting a custom executable inside the games Wineprefix once, or Custom User Start/Stop scripts to start custom scripts when game starts/ends.

Disclaimer

Although SteamTinkerLaunch lets you execute custom commands it does not guarantee compatibility. It simply launches the selected executable instead of the one Steam would normally use, and does not do any extra configuration to guarantee it will run correctly. If any manual configuration is needed to get a game to work outside of SteamTinkerLaunch, it will also be needed to ensure the program works with SteamTinkerLaunch.

And of course, if your program does not work with Linux normally, it will more than likely not work with SteamTinkerLaunch as well. Please do not open issues asking for support with third-party programs unless they only do not work when launched from SteamTinkerLaunch - That is, they work outside of SteamTinkerLaunch with the same Wine/Proton version, the same tweaks if necessary, and the same Wineprefix.