Cleans away old Mac Ports

portclean.sh

#!/bin/bash -v
#
# clean old mac ports.  Can save a few GBs.
# run as root.

echo "Before: "
du -sh /opt

dupes=$(port installed | cut -d '@' -f 1 | uniq -d)
if [ -z "$dupes" ]
then
    echo "No duplicates."
else
    echo `echo $dupes | wc -l` " duplicates"
    echo $dupes
fi

port clean --all installed
port -f uninstall inactive
port uninstall leaves

echo "After:"
du -sh /opt