105 lines
2.7 KiB
Groff
105 lines
2.7 KiB
Groff
.\" -*-Nroff-*-
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.\"
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.TH W "1" "2020-06-04" "procps-ng" "User Commands"
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.SH NAME
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w \- Show who is logged on and what they are doing.
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.SH SYNOPSIS
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.B w
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[\fIoptions\fR] [\fIuser\fR]
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.SH DESCRIPTION
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.B w
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displays information about the users currently on the machine, and their
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processes. The header shows, in this order, the current time, how long the
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system has been running, how many users are currently logged on, and the
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system load averages for the past 1, 5, and 15 minutes.
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.PP
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The following entries are displayed for each user: login name, the tty name,
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the remote host, login time, idle time, JCPU, PCPU, and the command line of
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their current process.
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.PP
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The JCPU time is the time used by all processes attached to the tty. It does
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not include past background jobs, but does include currently running
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background jobs.
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.PP
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The PCPU time is the time used by the current process, named in the "what"
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field.
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.SH "COMMAND\-LINE OPTIONS"
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.TP
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\fB\-h\fR, \fB\-\-no\-header\fR
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Don't print the header.
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.TP
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\fB\-u\fR, \fB\-\-no\-current\fR
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Ignores the username while figuring out the
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current process and cpu times. To demonstrate this, do a
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.B su
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and do a
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.B w
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and a
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.BR "w \-u".
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.TP
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\fB\-s\fR, \fB\-\-short\fR
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Use the short format. Don't print the login time, JCPU or PCPU times.
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.TP
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\fB\-f\fR, \fB\-\-from\fR
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Toggle printing the
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.B from
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(remote hostname) field. The default as released is for the
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.B from
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field to not be printed, although your system administrator or distribution
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maintainer may have compiled a version in which the
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.B from
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field is shown by default.
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.TP
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\fB\-\-help\fR
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Display help text and exit.
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.TP
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\fB\-i\fR, \fB\-\-ip\-addr\fR
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Display IP address instead of hostname for \fBfrom\fR field.
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.TP
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\fB\-p\fR, \fB\-\-pids\fR
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Display pid of the login process/the "what" process in the "what" field.
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.TP
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\fB\-V\fR, \fB\-\-version\fR
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Display version information.
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.TP
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\fB\-o\fR, \fB\-\-old\-style\fR
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Old style output. Prints blank space for idle times less than one minute.
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.TP
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.B "user "
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Show information about the specified user only.
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.SH ENVIRONMENT
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.TP
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PROCPS_USERLEN
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Override the default width of the username column. Defaults to 8.
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.TP
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PROCPS_FROMLEN
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Override the default width of the from column. Defaults to 16.
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.SH FILES
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.TP
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.I /var/run/utmp
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information about who is currently logged on
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.TP
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.I /proc
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process information
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.SH "SEE ALSO"
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.BR free (1),
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.BR ps (1),
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.BR top (1),
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.BR uptime (1),
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.BR utmp (5),
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.BR who (1)
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.SH AUTHORS
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.B w
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was re-written almost entirely by Charles Blake, based on the version by
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.UR greenfie@\:gauss.\:rutgers.\:edu
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Larry Greenfield
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.UE
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and
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.UR johnsonm@\:redhat.\:com
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Michael K. Johnson
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.UE
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.SH "REPORTING BUGS"
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Please send bug reports to
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.UR procps@freelists.org
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.UE
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