Homebrew Package Update Notifications on Mountain Lion

brew-update-notifier.sh

#!/bin/bash
#
# Notify of Homebrew updates via Notification Center on Mac OS X
#
# Author: Chris Streeter http://www.chrisstreeter.com
# Requires: terminal-notifier. Install with:
#   gem install terminal-notifier

TERM_APP='/Applications/Terminal.app'
BREW_EXEC='/usr/local/bin/brew'
TERMINAL_NOTIFIER=`which terminal-notifier`
NOTIF_ARGS="-activate com.apple.Terminal"

$BREW_EXEC update 2>&1 > /dev/null
outdated=`$BREW_EXEC outdated | tr ' ' '\n'`

if [ -z "$outdated" ] ; then
    if [ -e $TERMINAL_NOTIFIER ]; then
        # No updates available
        $TERMINAL_NOTIFIER $NOTIF_ARGS \
            -title "No Homebrew Updates Available" \
            -message "No updates available yet for any homebrew packages."
    fi
else
    # We've got an outdated formula or two

    # Nofity via Notification Center
    if [ -e $TERMINAL_NOTIFIER ]; then
        lc=$((`echo "$outdated" | wc -l`))
        outdated=`echo "$outdated" | tail -$lc`
        message=`echo "$outdated" | head -5`
        if [ "$outdated" != "$message" ]; then
            message="Some of the outdated formulae are:
$message"
        else
            message="The following formulae are outdated:
$message"
        fi
        # Send to the Nofication Center
        $TERMINAL_NOTIFIER $NOTIF_ARGS \
            -title "Homebrew Update(s) Available" -message "$message"
    fi
fi

Works great, thanks for the gist! One fix: line 7 should be # gem install terminal-notifier

Thanks!

Alternatively you could do brew install terminal-notifier, which since this tool is targeting brew users, seems like has better odds of working out of the box.

I've extended the script to exclude pinned formulae in the list of outdated formulas:

https://gist.github.com/SimonSimCity/13832e2e03597a6be793

I wanted to include this in our laptop setup script, so I enhanced it with a simple cron job "installer" and made it a real project repository: https://github.com/grantovich/homebrew-notifier

Thanks to @streeter for approving the open-source license!

Added some new features on my forked version. macOS High Sierra
https://gist.github.com/todmephis/832796f8d5b148efa89df4ca7c63a1b4

Thanks @streeter. Great script.