Getting help for a command is easy. Every Gitolite command responds with a help message when called with -h as the only argument. For example, the help message for the info command is given as follows:
$ ssh git@server info -h Usage: gitolite info [-lc] [-ld] [<repo name pattern>] List all existing repos you can access, as well as repo name patterns you can create repos from (if any). '-lc' lists creators as an additional field at the end. '-ld' lists description as an additional field at the end. The optional pattern is an unanchored regex that will limit the repos searched, in both cases. It might speed up things a little if you have more than a few thousand repos.
As before, some of these options pertain to features of Gitolite we have not yet encountered, and will become clearer when that material is presented.