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w(1)									  w(1)

Name
       w - display who is logged in and what they are doing

Syntax
       w [ options ] [user]

Description
       The  command  prints  a	summary of the current activity on the system,
       including what each user is doing.  The heading line shows the  current
       time  of	 day,  how  long  the  system has been up, the number of users
       logged into the system, and the load averages.  The load	 average  num‐
       bers give the number of jobs in the run queue averaged over 1, 5 and 15
       minutes.

       The fields output are:
       The users login name
       The name of the tty the user is on
       The host from which the user is logged in
       The time of day the user logged on
       The number of minutes since the user last typed anything
       The CPU time used by all processes and their children on that terminal
       The CPU time used by the currently active processes
       The name and arguments of the current process

Options
       -d Outputs debug information.

       -f Suppresses the `from' field.

       -h Suppresses the normal header from the output.

       -l Displays information in long format (default).

       -s Displays information in short format.	 In the short form, the tty is
	  abbreviated,	the  login time and cpu times are left off, as are the
	  arguments to commands.

       -u Outputs the same information as the command.

	  If a user name is included, the output will be  restricted  to  that
	  user.

Restrictions
       The  notion  of	the ``current process'' is unclear.  The current algo‐
       rithm is ``the highest numbered process on the  terminal	 that  is  not
       ignoring interrupts, or, if there is none, the highest numbered process
       on the terminal''.  This fails, for example, in	critical  sections  of
       programs	 like the shell and editor, or when faulty programs running in
       the background fork and fail to ignore interrupts.  (In cases where  no
       process can be found, prints ``-''.)

       The  CPU	 time  is only an estimate, in particular, if someone leaves a
       background process running after logging out, the person	 currently  on
       that terminal is ``charged'' with the time.

       Background  processes  are not shown, even though they account for much
       of the load on the system.

       Sometimes processes, typically those in	the  background,  are  printed
       with  null or garbaged arguments.  In these cases, the name of the com‐
       mand is printed in parentheses.

       The command does not know about conventions for detection of background
       jobs.   It  will	 sometimes  find a background job instead of the right
       one.

Files
       /etc/utmp
       /dev/kmem
       /dev/drum

See Also
       finger(1), ps(1), who(1)

									  w(1)

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