Homebrew auto-update profile script

brewautoupdate.sh

#!/bin/bash

# Check for the existance of ~/.brewlastupgraded containing a unix timestamp of the last upgrade
if [ -f ~/.brewlastupgraded ]; then
    lastupgraded=$(cat ~/.brewlastupgraded)
else
    lastupgraded=0
fi

# Check if the last upgrade was more than 7 days ago
if [ $(date +%s) -gt $((lastupgraded + 7*24*60*60)) ]; then
    echo "It's been more than 7 days since the last brew upgrade. Upgrading now..."
    brew update && brew upgrade
    # Update the last upgraded timestamp
    date +%s > ~/.brewlastupgraded
fi