Update WordPress with a dirty bash script. (Please use version control, not this...)

update-wordpress.sh

#!/bin/sh
WEBROOT=/var/www/wordpress
LATEST_VER=$(curl -s http://api.wordpress.org/core/version-check/1.5/ | head -n 4 | tail -n 1)
LOCAL_VER=$(grep wp_version\ = $WEBROOT/wordpress/wp-includes/version.php | grep -o "'.*'" | sed -e "s/'//g")

echo "Latest version of WordPress: $LATEST_VER"
echo "Version on $(uname -n): $LOCAL_VER"

if [ "$LATEST_VER" == "$LOCAL_VER" ]; then
        echo "No need to update.";
elif [ "update" == "$1" ]; then
        rm -f latest.zip
        wget http://wordpress.org/latest.zip
        unzip -q latest.zip
        mv wordpress $WEBROOT/wordpress-new
        mv $WEBROOT/wordpress $WEBROOT/wordpress-old
        mv $WEBROOT/wordpress-new $WEBROOT/wordpress
        rm -f latest.zip
        rm -rf $WEBROOT/wordpress-old
        echo "$WEBROOT updated to $(grep wp_version\ = $WEBROOT/wordpress/wp-includes/version.php | grep -o "'.*'" | sed -e "s/'//g")"
else
        echo "Run '!! update' to update $WEBROOT";
fi

wordpress-update-cron-alert.sh

#!/bin/sh
WEBROOT=/var/www/wordpress
LATEST_VER=$(curl -s http://api.wordpress.org/core/version-check/1.5/ | head -n 4 | tail -n 1)
LOCAL_VER=$(grep wp_version\ = $WEBROOT/wordpress/wp-includes/version.php | grep -o "'.*'" | sed -e "s/'//g")

if [ "$LATEST_VER" != "$LOCAL_VER" ]; then
    echo "$(uname -n) is running an out-of-date WordPress version."
    echo "Latest version of WordPress: $LATEST_VER"
    echo "Version on $(uname -n): $LOCAL_VER"
fi