print names of those who have sent
from prints out the mail header lines from
the invoker's mailbox.
The options are as follows:
- The supplied file is examined instead of the invoker's mailbox. If the
-foption is used, the user argument should not be used.
- Only mail from addresses containing the supplied string are printed.
If user is given, the user's mailbox is examined instead of the invoker's own mailbox. (Privileges are required.)
from utilizes the
USER environment variables.
from command appeared in
Bill Joy, 1979.