Too many package managers

On every system someone seems to invent a new package management system which means you've gotta learn the nearly the same thing over and over again. Tedious... Here's some notes to myself about how you can do basic stuff in a few I use (OSX/MacPorts[port], Ubuntu/Debian[aptitude,apt], RedHat/RPM[rpm,yum]).

Install Package

OSX% port install ThatPeskyPackage
ubuntu% aptitude install ThatPeskyPackage
ubuntu% apt-get install ThatPeskyPackage
ubuntu% dpkg -i ThatPeskyPackage.deb
RedHat% yum install ThatPeskyPackage
RedHat% rpm -i ThatPeskyPackage.rpm

Remove Package

OSX% port uninstall ThatPeskyPackage [version]
ubuntu% aptitude remove ThatPeskyPackage
ubuntu% apt-get remove ThatPeskyPackage
RedHat% yum erase ThatPeskyPackage
RedHat% rpm -e ThatPeskyPackage.rpm

Package Info

OSX% port info ThatPeskyPackage
ubuntu% aptitude install ThatPeskyPackage
ubuntu% apt-get install ThatPeskyPackage
RedHat% yum info ThatPeskyPackage
RedHat% rpm -qi ThatPeskyPackage

Package Content: What files did it install?

OSX% port contents ThatPeskyPackage
ubuntu% dpkg -L ThatPeskyPackage
RedHat% rpm -ql ThatPeskyPackage

What package does this file belong to?

OSX% port provides /usr/some/place/weird/whatisthis
ubuntu% dpkg -S /usr/some/place/weird/whatisthis
RedHat% rpm -qf /usr/some/place/weird/whatisthis

Which packages have I got installed?

OSX% port installed
ubuntu% dpkg --get-selections
RedHat% rpm -qa
RedHat% yum list