script to download the latest chromium build nightly

get_latest_chromium.sh

#!/bin/sh
## this is a quick and dirty script to automagically install the latest chromium build on OSX 10.5
## you can set this up as a nightly cron job, or run manually from the command line

# USAGE: 
# save script to your home directory aka /Users/$USER/
# open up a command prompt (aka /Applications/Utilities/Terminal)
# run manually from the command line whenever you want the most recent chromium build
# $ sh get_latest_chromium.sh
# start it as a nightly task (runs at 1am or edit the plist below)
# $ sh get_latest_chromium.sh --start
# stop it as a nightly task
# $ sh get_latest_chromium.sh --stop

if [ "$1" == "--start" ]; then
    echo "loading scheduled task"
cat >~/Library/LaunchAgents/chromium_update.plist <<-EOF
	<?xml version="1.0" encoding="UTF-8"?>
	<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
	<plist version="1.0">
	<dict>  
		<key>Label</key>
		<string>cz.jehiah.scripts.download-nightly-chromium-build</string>
		<key>ProgramArguments</key>
		<array> 
			<string>/Users/$USER/get_latest_chromium.sh</string>
		</array>
		<key>LowPriorityIO</key>
		<true/>
        <key>UserName</key>
        <string>$USER</string>
        <key>Nice</key>
		<integer>1</integer>
		<key>StartCalendarInterval</key>
		<dict>  
			<key>Hour</key>
			<integer>4</integer>
			<key>Minute</key>
			<integer>0</integer>
		</dict>
	</dict>
	</plist>
EOF
    launchctl load ~/Library/LaunchAgents/chromium_update.plist
    exit 0;  
fi

if [ "$1" == "--stop" ]; then
    echo "unloading scheduled task"
    launchctl unload ~/Library/LaunchAgents/chromium_update.plist
    exit 0;
fi

function getRunningPids {
    ps auxww | grep Chromium.app | grep -v grep | cut -d ' ' -f 2
}

LATEST=`curl --silent http://commondatastorage.googleapis.com/chromium-browser-snapshots/Mac/LAST_CHANGE`;
echo "latest build is $LATEST"
cd /tmp;
echo "switching to `pwd`"
echo "downloading ==> http://commondatastorage.googleapis.com/chromium-browser-snapshots/Mac/$LATEST/chrome-mac.zip";
curl --silent -L -O "http://commondatastorage.googleapis.com/chromium-browser-snapshots/Mac/$LATEST/chrome-mac.zip";
echo "unzipping chrome-mac.zip"
unzip -q chrome-mac.zip;

PIDS=`getRunningPids`
if [ ! -z "$PIDS" ]; then
    echo "stopping Chromium -- killing " $PIDS
    echo $PIDS | xargs kill > /dev/null 2>&1
    sleep 5s
fi

if [ -d /Applications/Chromium.app ] ; then
    echo "removing old Chromium in /Applications"
    rm -rf /Applications/Chromium.app
fi
echo "moving new version to /Applications"
mv chrome-mac/Chromium.app /Applications/
rm -rf chrome-mac
rm chrome-mac.zip

if [ ! -z "$PIDS" ]; then
    echo "staring Chromium"
    open /Applications/Chromium.app
fi
echo "done"