Polecenie who

Equivalent to -b -d --login -p -r -t -T -u.

Print the username of the invoking user.

Print time of last system boot.

Print a list of dead processes.

Print a help message and then exit.

Include idle times. An idle time of . indicates activity within the last minute; one of old indicates no activity in more than a day.

Print list of system login processes.

Attempt to include canonical hostnames via DNS.

Same as who am i.

Print active processes spawned by init.

"Quick." Display only the usernames and total number of users.

Print the current runlevel.

Print only name, line, and time. This is the default behaviour.

Print the last system clock change.

Print a list of the users who are logged in.

Print version information and then exit.

Include user's message status in the output:

+

mesg y (write messages allowed)

-

mesg n (write messages refused)

?

Cannot find terminal device

-H, --heading

Print headings.