Move google-chrome and google-chrome-beta cache directories to tmp

#!/bin/bash
#
# Copyright (c) 2015 Tara Nupsumass
#    This script is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 2 of the License, or
#    (at your option) any later version.
#
#    This script is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#	           <http://www.gnu.org/licenses/>
#    Google and the Google Chrome browser are registered trademarks of Google Inc.

# This script moves google-chrome and google-chrome-beta cache directories to /tmp/cache, 
# it should be run on user login.
# chromium support is a moot point since you can add add flags to ~/.chromium-browser.init
# such as this:
# CHROMIUM_FLAGS="$CHROMIUM_FLAGS --disk-cache-dir=/tmp/chromium-cach"

CHROME_TMP_CACHE_DIR="/tmp/cache/google-chrome"
CHROME_CACHE_DIR="$HOME/.cache/google-chrome"
CHROME="`which "google-chrome"`"
CHROME_BETA="`which "google-chrome-beta"`"

function GC{
# check if chrome is installed
	if [[ -x $CHROME ]]; then
		 echo "google-chrome found."
# chrome not found, abandoning this function.
    else echo "google-chrome not installed, skipping."; return
	fi
# check if tmp cache exists, otherwise create it.
	if [ ! -e $CHROME_TMP_CACHE_DIR ]; then
	     echo "/tmp/cache/google-chrome not found, creating it"
		 mkdir -p "$CHROME_TMP_CACHE_DIR"
# if tmp cache directory already exists, skip creating it
	else
		 echo "/tmp/cache/google-chrome found, not creating it."
	fi
# remove any remaining cache and symlink it
	if [ -d $CHROME_CACHE_DIR ]; then
		 echo "existing ~/.cache/google-chrome found, deleting it."
         rm -Rf "$CHROME_CACHE_DIR"
		 echo "symlinking /tmp/cache/google-chrome to ~/.cache/google-chrome"
         ln -s "$CHROME_TMP_CACHE_DIR" "$CHROME_CACHE_DIR"
	else
		 echo "existing ~/.cache/google-chrome not found, good to go! symlinking /tmp/cache/google-chrome to ~/.cache/google-chrome"
	fi
}

function GCB{

# check if chrome beta is installed
    if [[ -x $CHROME_BETA ]]; then
         echo "google-chrome-beta found."
# chrome beta not found, abandoning this function.
	else echo "google-chrome-beta not installed, skipping"; return
	fi
# check if tmp cache exists, otherwise create it.
    if [ ! -e $CHROME_TMP_CACHE_DIR-beta ]; then
         echo "/tmp/cache/google-chrome-beta not found, creating it"
         mkdir -p "$CHROME_TMP_CACHE_DIR-beta"
# if tmp cache directory already exists, skip creating it
    else
         echo "/tmp/cache/google-chrome-beta found, not creating it."
	fi
# remove any remaining cache and symlink it
    if [ -d $CHROME_CACHE_DIR-beta ]; then
         echo "existing ~/.cache/google-chrome-beta found, deleting it."
         rm -Rf "$CHROME_CACHE_DIR-beta"
         echo "symlinking /tmp/cache/google-chrome-beta to ~/.cache/google-chrome-beta"
         ln -s "$CHROME_TMP_CACHE_DIR-beta" "$CHROME_CACHE_DIR-beta"
    else
         echo "existing ~/.cache/google-chrome-beta not found, good to go! symlinking /tmp/cache/google-chrome-beta to ~/.cache/google-chrome-beta"
    	 ln -s "$CHROME_TMP_CACHE_DIR-beta" "$CHROME_CACHE_DIR-beta"
	fi
}

# functions loaded, running them!

GC
GCB