p4 describe displays the details of one or more changelists. For each changelist, the output includes the changelist's number, the changelist's creator, the client workspace name, the date the changelist was created, and the changelist's description.
If a changelist has been submitted, the default output also includes a list of affected files and the diffs of those files relative to the previous revision.
If a changelist is pending, it is flagged as such in the output, and the list of open files is shown. (Diffs for
pending changelists are not displayed because the files have yet to be submitted to the server.)
You cannot run p4 describe on the default changelist.
While running p4 describe, the server uses Perforce's built-in client-side diff subroutine. The
P4DIFF variable has no effect on this command.