MirOS Manual: w(1)

W(1)                         BSD Reference Manual                         W(1)

NAME

     w - display users who are logged on and what they are doing

SYNOPSIS

     w [-ahi] [-M core] [-N system] [user]

DESCRIPTION

     The w utility prints a summary of the current activity on the system, in-
     cluding what each user is doing. The first line displays the current time
     of day, how long the system has been running, the number of users logged
     into the system, and the load averages. The load average numbers give the
     number of jobs in the run queue averaged over 1, 5 and 15 minutes.

     The fields output are the user's login name, the name of the terminal the
     user is on, the host from which the user is logged in, the time the user
     logged on, the time since the user last typed anything, and the name and
     arguments of the current process.

     The options are as follows:

     -a      Attempt to translate network addresses into names.

     -h      Suppress the heading.

     -i      Output is sorted by idle time.

     -M core
             Extract values associated with the name list from the specified
             core instead of the running kernel.

     -N system
             Extract the name list from the specified system instead of the
             running kernel.

     If a user name is specified, the output is restricted to that user.

FILES

     /var/run/utmp  list of users on the system

SEE ALSO

     finger(1), ps(1), uptime(1), who(1), utmp(5)

STANDARDS

     The -f, -l, -s, -u, and -w flags are no longer supported.

HISTORY

     The w command appeared in 3.0BSD.

BUGS

     The notion of the "current process" is muddy. The current algorithm is
     ``the highest numbered process on the terminal that is not ignoring in-
     terrupts, or, if there is none, the highest numbered process on the ter-
     minal.'' 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, w prints "-".)

     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 command is
     printed in parentheses.

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

MirOS BSD #10-current            June 6, 1993                                1

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