This example shows a bash script named `proton.sh` that runs a non-Steam application on Linux through Steam’s Proton compatibility layer. The script takes a file path as its first argument, checks that both the Proton 5.0 installation and the target file exist, then executes the Proton binary with `run $RUNNING`. It uses environment variables `STEAM_COMPAT_DATA_PATH` and `MOUNT_PATH` to set compatibility data and mount locations, along with `PROTON_USE_WINED3D11=1` and `PROTON_NO_ESYNC=1` to configure rendering and synchronization. The script outputs colored status messages via `printf` before redirecting Proton’s output to `/dev/null` and exiting with status 0.