helpers - list or count helpers currently on the system.
Helpers are users who volunteer to answer help requests by setting a help flag.
For more information, see the manual pages for mesg(1) and
write(1).
The helpers command lists or counts the people who
currently have helper flags set on the system. It lists them by default, or
if the -l flag is given. It prints a count to standard output if the
-n flag is given.
If the -f flag is given, only the helpers who are currently
free are listed or counted.