mailman can be adminned via its GUI …. if you are a wimp.
mail man comes with fun scripts located here.. /usr/share/mailman/bin (on the lincoln webserver)
learn more about the scripts here
fun scripts of note:
/usr/share/mailman/bin/config_list -i ~/Desktop/defaultMailMan.config broadexperience
super hardcore (only with adult supervision):
(note this is a one-liner, the linebreaks are just so it fits on the webpage)
cat /private/var/root/Desktop/lists.txt | while read listname ; do echo "####" $listname "####" ; /usr/share/mailman/bin/add_members -r ~/Desktop/listmonitor.txt $listname ; done