Create multiple_install_manager.sh

multiple_install_manager.sh

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+# STEAMPREFIX is simply the path to where your steam games are installed. My library is in /var/games, but you may change it to your liking
+export STEAMPREFIX="/var/games/SteamLibrary/steamapps/common"
+
+# This function will change symbolic links from your steamapps/common folder to the install location of whichever game you wish. I use this
+# for managing stable and beta versions of Project Zomboid, but you can use them for any game
+  
+change_install () {
+  if [ "$#" -lt 2 ]; then
+    echo "Usage: change_install <GameFolder> <InstallLocation>"
+    echo "Where GameFolder is the location of your game files"
+    echo "and InstallLocation is where you'd like to link them."
+    echo "GameFolder should be a renamed game folder in your steamapps/common folder"
+    exit 1
+  fi
+
+  export GAMEFOLDER=${1}
+  export INSTALLLOCATION=${2}
+  echo "Please exit Steam now to prevent updating over a different version"
+  echo "It's also recommended to add ${INSTALLLOCATION} to your exceptions"
+  echo "in Steam to only update the game when you launch it"
+  echo "(Enter to continue, CTRL+C to exit)"
+  read
+
+  unlink "${STEAMPREFIX}/${INSTALLLOCATION}"
+
+  if [ "$?" -ne 0 ]; then
+    echo "Unlink failed, have you followed the setup process?"
+    exit 1
+  fi
+  
+  ln -s "${STEAMPREFIX}/${GAMEFOLDER}" "${STEAMPREFIX}/${INSTALLLOCATION}"
+
+  echo "You may start Steam now. Please remember to change your beta settings for ${GAMEFOLDER}"
+  echo "to prevent from updating to a version you do not want in this location"
+
+}
+
+setup_install () {
+  if [ "$#" -lt 2 ]; then
+    export SHELLNAME=$(echo $SHELL | awk -F "/" '{print $NF}')
+    echo "Usage: setup_install <GameFolder> <NewLocation>"
+    echo "Where GameFolder is the install location in your steam prefix"
+    echo "Please make sure to update your Steam Prefix to your library location"
+    echo "if you are not using ${STEAMPREFIX} as your library location"
+    echo "This variable can be found in your profile, also known as .${SHELLNAME}rc"
+    exit 1
+  fi
+  export GAMEFOLDER=${1}
+  export NEWLOCATION=${2}
+
+  echo "Please quit Steam at this time"
+  echo "(Enter to continue, CTRL+C to exit)"
+  read
+  
+  echo "Moving ${STEAMPREFIX}/${GAMEFOLDER} to ${STEAMPREFIX}/${NEWLOCATION}"
+  echo -n "Continue? [y/N]: "
+
+  read ANS
+
+  case "${ANS}" in
+    y* | Y*) mv "${STEAMPREFIX}/${GAMEFOLDER}" "${STEAMPREFIX}/${NEWLOCATION}"
+    ;;
+    *) echo "Cancelling with no change"; exit 1
+    ;;
+  esac
+
+  if [ "$?" -eq 0 ]; then
+    echo "Game moved successfully!"
+    echo "You may now start Steam and install a different version of the game."
+    echo "To make the game playable, please run:"
+    echo "change_install ${NEWLOCATION} ${GAMEFOLDER}"
+  else
+    echo "Game could not be moved. Please check your command and try again."
+    echo "Remember that file paths are case-sensitive on Linux"
+    exit 1
+  fi
+
+}