One good way to find information about particular programs or commands on Athena is to read the manual pages with the "man" command. Type:
at your athena% prompt, where program is the name of the command you are curious about. For example,
tells you how the zwrite command works, what arguments it accepts, and some known bugs.
Another good tool is the apropos command. If you type
a list of all man pages that contain keyword in their name field will be returned. For example, if you type
You'll get this output:
You can then use man to view the manual page for the specific command you want. You can also type
to get more information on how man works.