Reference for working with MacPorts.
Manual for ports
man port
Location of installed ports
/opt
Upgrade mac ports and the port list
sudo port selfupdate
List all available ports
port list
Search for a port name
port search <name>
Show information about a particular port
port info <name>
Show the variants (additional components) that can be installed with a port
port variants <name>
Install an item (use +<variant> or -<default> to add or remove additional components)
sudo port install <name>
Remove an installed item (will fail if item has dependants, override with -f flag)
port uninstall <name>
Remove all inactive ports
port uninstall inactive
Show a list of outdated items, their installed version and the available MacPorts version
port outdated
Update the old items and remove the old version
sudo port -u upgrade outdated
Update the old items (keeping the original version and deactivating it)
sudo port upgrade outdated
Upgrade an installed item (add -n to not update dependencies, -u to remove old version)
port upgrade <name>
Show all installed items, their versions and activation status
port installed
Show details about an installed item
port installed <name>
Show active installed ports
port list active
Show inactive installed ports
port list inactive
Show items that depend on the named item (eg. port dependents curl):
port dependents <name>
Show dependencies the item has
port deps <name>
Show the files that were installed by a port install
port contents <name>
Clean up all files (work, dist, archive) for all ports
sudo port clean --all all
Clean up selected file types (work, dist, archive) for specified port
sudo port clean --<type> <name>