auto update chromium on osx

chromium_update.sh

#!/bin/bash
# Chromium update script
# - by shad <shad@zaphod.eu>
# - by superbil <help@superbil.info>

OS=mac
SITE=http://build.chromium.org/buildbot/snapshots/chromium-rel-
LATEST=$(wget -q -O - ${SITE}${OS}/LATEST)
INSTALL_DIR=/Applications
TARGET=Chromium
TMP_ZIP=chrome.zip
TMP_DIR="/tmp/update-chrome-$RANDOM"

(
mkdir $TMP_DIR; cd $TMP_DIR
echo Download ${TARGET}...
wget -O ${TMP_DIR}/${TMP_ZIP} ${SITE}${OS}/${LATEST}/chrome-${OS}.zip
if [ $? -ne 0 ] ; then
	echo Cannot update.
	exit 1
fi
echo Unzip ${TARGET}...
unzip -qq ${TMP_ZIP}
echo Closing ${TARGET}...
killall ${TARGET}
echo Copying ${TARGET}...
rm -rf "${INSTALL_DIR}/${TARGET}.app"
mv chrome-$OS/${TARGET}.app "$INSTALL_DIR"
)
# Clean TempFiles
rm -rf ${TMP_DIR}

crontab

00 12 * * * /Users/Shared/mbin/chromium_update.sh