Script for updating packages via crontab

packages.sh

#!/bin/sh

# Determine if any updates were made
did_update=false

# Update Homebrew
brew update > /dev/null;
new_brew_packages=$(brew outdated --quiet)
num_brew_packages=$(echo $new_brew_packages | wc -w)

if [ $num_brew_packages -gt 0 ]; then
    brew upgrade > /dev/null;
    did_update=true;
fi

# Update Composer
composer self-update --quiet > /dev/null;
new_comp_packages=$(composer global show --name-only --outdated --quiet)
num_comp_packages=$(echo $new_comp_packages | sed '/^\s*$/d' | wc -l)

if [ $num_comp_packages -gt 0 ]; then
    composer global update --quiet;
    did_update=true;
fi

# Finally, send our nofication
if ${did_update}; then
    osascript -e 'display notification "Packages updated!" with title "Package Updater"'
fi