I have a specific change list, and from the command line I want to list all files that were a part of that change list. How do I do this?
That's the describe command. To describe a particular changelist, you want p4 describe .
Update:
If you only want the file names, you can use the files command with the -F option to override the output format: p4 -Ztag -F "%depotFile%" files @=
See http://www.perforce.com/blog/130826/fun-formatting for more information about the -F option.