Launch new instances of Google Chrome on OS X with isolated cache, cookies, user config and custom Timezone

fresh-chrome.sh

#!/usr/bin/env bash
# The MIT License (MIT)
#
# Copyright (c) 2013 Stuart Sierra
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation files
# (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software,
# and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

# Original version: https://gist.github.com/prasadsilva/225fd0394a51e52bf62f
# This version: https://gist.github.com/dohpaz42/e046aeff3ed5959f973bbb2d0bae1175

# fresh-chrome
#
# Use this script on OS X to launch a new instance of Google Chrome
# with its own empty cache, cookies, and user configuration.
#
# The first time you run this script, it will launch a new Google
# Chrome instance with a permanent user-data directory, which you can
# customize below. Perform any initial setup you want to keep on every
# new Chrome instance, such as adding bookmarks and extensions. Then
# quit this Chrome instance with Command-Q or by selecting "Quit" from
# the "Chrome" menu. (The red "close" button is not sufficient.)
#
# AFTER that, every time you run this script it will launch a new
# Google Chrome instance with a temporary user-data directory copied
# from the one you set up the first time you ran this script. Every
# new instance of Google Chrome launched by this script will be
# completely isolated from the others.

# Permanent directory to store the user-data directory of your 'fresh'
# Chrome configuration.
fresh_dir="$HOME/.fresh-chrome"

### Main script begins
BASENAME=$(basename $0)
DEFAULT_TZ="America/Los_Angeles"

app_name="Google Chrome"
app_path=`defaults read com.google.chrome LastRunAppBundlePath 2>/dev/null`

if [ "x$app_path" = "x" ]; then
    app_path="/Applications/${app_name}.app"
fi

bin_name=`defaults read "${app_path}/Contents/Info.plist" CFBundleExecutable 2>/dev/null`

if [ "x$bin_name" = "x" ]; then
    echo "$BASENAME: Missing application \"$app_name\" not installed or misconfigured"
    exit 1
fi

bin_path="${app_path}/Contents/MacOS/${bin_name}"

if [ "x$1" = "x" ]; then
    export TZ=$DEFAULT_TZ
elif [ ! -f "/usr/share/zoneinfo/$1" ]; then
    echo "$BASENAME: To get a list of valid timezones, run the following command:"
    echo "    sudo systemsetup -listtimezones"
    exit 1
else
    export TZ="$1"
fi

# Cleanup after ourselves
function cleanup() {
    if [ -d "$tmp_dir" ]; then
        echo "$BASENAME: Cleaning up after ourselves..."
        rm -rf "$tmp_dir"
    fi
}

trap cleanup 0 1 2 3 15

# Temporary directory in which to create new user-data directories for
# temporary Chrome instances.
tmp_dir=$(mktemp -d)

set -e

timestamp=`date +%Y%m%d%H%M%S`

echo "$BASENAME: Launching ${app_name} in time zone ${TZ}..."
if [[ -e "$fresh_dir" ]]; then
    user_dir="$tmp_dir/chrome-$timestamp-$RANDOM"
    cp -r "$fresh_dir" "$user_dir"
    "${bin_path}" --user-data-dir="$user_dir" >/dev/null 2>&1
else
    "${bin_path}" --user-data-dir="$fresh_dir" >/dev/null 2>&1
fi