==== darwinports // MacPorts ====
a port of the bsd 'ports' system for darwin based systems (eg. [[macOS]]) ,.. http://www.macports.org/
==== re.dport ====
%port installed > installed.txt
[reinstall...]
% sed 1,1d installed.txt | cut -f 3 -d ' ' | xargs -t -n 1 sudo port install
%port selfupdate && port upgrade outdated