#!/bin/sh /home/USER/bin/steam/steamcmd.sh +@sSteamCmdForcePlatformType linux +force_install_dir $(realpath .) +login anonymous +app_update 896660 -beta none validate +quit # Download SteamCMD and unzip it somewhere # Create the folder /home/USER/Downloads/valheim and put this script inside # give exec permissions: chmod +x ./install_or_update.sh # then execute it: ./install_or_update.sh # You can re-execute this script from time to time to update the server. A good idea is to run it whenever there's an update to the actual game on Steam.