How to execute a script when Chrome is closed? - google-chrome

Question

I want to make a timestamped backup of the bookmarks with rsync everytime Chrome exits. How to trigger a script execution right after Chrome closes?
Edit:
This is the default execution script to start Chrome on Linux Mint with the solution I'm trying to implement:
#!/bin/bash
#
# Copyright (c) 2011 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# Let the wrapped binary know that it has been run through the wrapper.
export CHROME_WRAPPER="`readlink -f "$0"`"
HERE="`dirname "$CHROME_WRAPPER"`"
"/opt/google/chrome/chrome" & pid=$!
wait $pid
if ! pgrep chrome > /dev/null; then
echo "It exited successfully"
fi
# Check if the CPU supports SSE2. If not, try to pop up a dialog to explain the
# problem and exit. Otherwise the browser will just crash with a SIGILL.
# http://crbug.com/348761
grep ^flags /proc/cpuinfo|grep -qs sse2
if [ $? != 0 ]; then
SSE2_DEPRECATION_MSG="This computer can no longer run Google Chrome because \
its hardware is no longer supported."
if which zenity &> /dev/null; then
zenity --warning --text="$SSE2_DEPRECATION_MSG"
elif which gmessage &> /dev/null; then
gmessage "$SSE2_DEPRECATION_MSG"
elif which xmessage &> /dev/null; then
xmessage "$SSE2_DEPRECATION_MSG"
else
echo "$SSE2_DEPRECATION_MSG" 1>&2
fi
exit 1
fi
# We include some xdg utilities next to the binary, and we want to prefer them
# over the system versions when we know the system versions are very old. We
# detect whether the system xdg utilities are sufficiently new to be likely to
# work for us by looking for xdg-settings. If we find it, we leave $PATH alone,
# so that the system xdg utilities (including any distro patches) will be used.
if ! which xdg-settings &> /dev/null; then
# Old xdg utilities. Prepend $HERE to $PATH to use ours instead.
export PATH="$HERE:$PATH"
else
# Use system xdg utilities. But first create mimeapps.list if it doesn't
# exist; some systems have bugs in xdg-mime that make it fail without it.
xdg_app_dir="${XDG_DATA_HOME:-$HOME/.local/share/applications}"
mkdir -p "$xdg_app_dir"
[ -f "$xdg_app_dir/mimeapps.list" ] || touch "$xdg_app_dir/mimeapps.list"
fi
# Always use our versions of ffmpeg libs.
# This also makes RPMs find the compatibly-named library symlinks.
if [[ -n "$LD_LIBRARY_PATH" ]]; then
LD_LIBRARY_PATH="$HERE:$HERE/lib:$LD_LIBRARY_PATH"
else
LD_LIBRARY_PATH="$HERE:$HERE/lib"
fi
export LD_LIBRARY_PATH
export CHROME_VERSION_EXTRA="stable"
# We don't want bug-buddy intercepting our crashes. http://crbug.com/24120
export GNOME_DISABLE_CRASH_DIALOG=SET_BY_GOOGLE_CHROME
# Automagically migrate user data directory.
# TODO(phajdan.jr): Remove along with migration code in the browser for M33.
if [[ -n "" ]]; then
if [[ ! -d "" ]]; then
"$HERE/chrome" "--migrate-data-dir-for-sxs=" \
--enable-logging=stderr --log-level=0
fi
fi
# Sanitize std{in,out,err} because they'll be shared with untrusted child
# processes (http://crbug.com/376567).
exec < /dev/null
exec > >(exec cat)
exec 2> >(exec cat >&2)
# Make sure that the profile directory specified in the environment, if any,
# overrides the default.
if [[ -n "$CHROME_USER_DATA_DIR" ]]; then
# Note: exec -a below is a bashism.
exec -a "$0" "$HERE/chrome" \
--user-data-dir="$CHROME_USER_DATA_DIR" "$#"
else
exec -a "$0" "$HERE/chrome" "$#"
fi

Answer 1

What OS are you using? In OS X, this shell script will start Chrome and then do stuff when Chrome quits - it should be easy to adapt it for your needs in any Unix-like OS.
#! /usr/bin/env sh
"/Applications/Google Chrome.app/Contents/MacOS/Google Chrome" & pid=$!
wait $pid
if ! pgrep Chrome > /dev/null; then # no instances of Chrome are running
# do stuff
fi
(based on this answer)
Edit: And this works for me in Ubuntu:
#! /usr/bin/env sh
/opt/google/chrome/chrome & pid=$!
wait $pid
if ! pgrep chrome > /dev/null; then
# do stuff
fi

Answer 2

Due to the way Google Chrome uses processes, monitoring (PID) the process of a specific Google Chrome window (or instance) of it is usually a headache or (almost) impossible.
But, there is a workaround way that makes this possible. Just use the --user-data-dir parameter pointing to the /tmp folder (--user-data-dir=/tmp).
Below, to illustrate, I've created a bash script that starts the http Web service Gitea, opens it in a Google Chrome, and then terminates it when the Google Chrome window is closed.
#!/bin/bash
gitea & GITEA_PID=$!
sleep 3
google-chrome-stable --user-data-dir=/tmp --app=http://0.0.0.0:3000/ & CHROME_PID=$!
wait $CHROME_PID
kill -9 $GITEA_PID
Basically I'm using your same idea. Just adapt. 🥰
[Ref(s).: https://stackoverflow.com/a/75013043/3223785 ,
https://stackoverflow.com/a/35294908/3223785 ,
https://www.ghacks.net/2013/10/06/list-useful-google-chrome-command-line-switches/ ,
https://www.reddit.com/r/firefox/comments/w61dwi/how_do_i_start_firefox_in_a_single_window_with/?utm_source=share&utm_medium=web2x&context=3 , ]