Download a particular version of Google Chrome from Old Apps

dl-chrome.sh

#!/bin/sh
# @author Rob Wu <gwnRob@gmail.com> (https://robwu.nl)
version=$1
if [[ "${version}" != *"."* ]] ; then
    echo "Repeat the command with an exact version:"
    suffix="[0-9.]*"
    # Version not specified in $1
    [ -z $version ] && suffix="[0-9][0-9.]+"
    curl -s http://www.oldapps.com/google_chrome.php | grep -oP "google_chrome.php\?old_chrome=[0-9]+\">[A-Za-z ]+\K${version}${suffix}( [A-Za-z()]+)?" -m 10
elif [ -e "${version}_chrome_installer.exe" ] ; then
    echo "${version}_chrome_installer.exe does already exist!"
else
    wget "http://download.oldapps.com/Chrome/${version}_chrome_installer.exe"
fi