Update all installed MacPorts packages

port-upgrade.sh

#!/bin/zsh

sudo port selfupdate

outdated_ports=$(port echo outdated)

if [[ -z $outdated_ports ]]; then
   exit 0
fi

echo "$outdated_ports \n---> Upgrade outdated ports? "
read -q
echo
if [[ $REPLY = "y" ]]; then
    sudo port upgrade outdated
fi

inactive_ports=$(port echo inactive)
if [[ -z $inactive_ports ]]; then
    exit 0
fi

echo "$inactive_ports \n---> Remove inactive ports? "
read -q
echo
if [[ $REPLY = "y" ]]; then
    sudo port uninstall inactive
fi