har -t archive-name [object-file...]
To show the members that comprise an archive, use the -t switch. The member's names are listed with their sizes. If you only give the archive name on the command line, the archiver lists all the members contained in the archive. However, you can list the attributes of specific members of the archive by specifying the names of the members you are interested in.
To list all the members of the archive cclib.hza, use:
har -t cclib.hza
To list only the attributes of the member ir.hzo that is contained in the archive cclib.hza, use:
har -t cclib.hza ir.hzo