This script is used to configure https://macports.org directly from their git repo. I have found that using mac ports this way enables support for bleeding edge OS versions or CPU architectures.
EXAMPLE
./macports -ip
OPTIONS
-c Fully remove macportsThe cleanup option is very heavy handed and nukes all the macports direcotries and files.
-i Install macports and ports tree from git
Installing will pull down the ports base and ports git repos from github. Compiling ports base and syncing the ports tree is also part of install.
-p Install ports from file list
The port install command will iterate over the list of ports. Port variants can be specified as well.
-u Upgrade installed ports
Upgrade will check for ports base updates, port list updates & update as needed.
-h Help
Use the help on the cli for a reminder of the options
Functioning Xcode installation is a prerequisite
Updating your path to inlcude /opt/local/bin is not implimented in the script. See this page for configuring your dotfiles appropriatly. https://guide.macports.org/chunked/installing.shell.html