homebrew outdated packages notification

crontab.sh

# put this to crontab

@daily ~/notify.sh

# for automatic updates (not upgrades)

@daily /usr/local/bin/brew update > /dev/null 2>&1

notify.sh

#!/bin/sh

OSASCRIPT_PATH=$(which osascript)
BREW_PATH=/usr/local/bin/brew
OUTDATED_PKGS=$($BREW_PATH outdated --verbose)

if [ -z "$OSASCRIPT_PATH" ]; then
  echo "Osascript isn't installed!"
  exit 1
fi

if [ -z "$BREW_PATH" ]; then
  echo "Homebrew isn't installed!"
  exit 1
fi

if ! [ -z "$OUTDATED_PKGS" ]; then
  $OSASCRIPT_PATH -e "display notification \"$OUTDATED_PKGS\" with title \"Outdated packages\" sound name \"Glass\""
fi