.\" .\" Copyright (c) 2009-2025 Craig Small .\" Copyright (c) 2015-2024 Jim Warner .\" Copyright (c) 2012-2013 Jaromir Capik .\" Copyright (c) 2011-2012 Sami Kerola .\" Copyright (c) 2002-2004 Albert Cahalan .\" .\" This program is free software; you can redistribute it and/or modify .\" it under the terms of the GNU General Public License as published by .\" the Free Software Foundation; either version 2 of the License, or .\" (at your option) any later version. .\" .\" .TH W 1 2025-11-29 procps-ng .SH NAME w \- Show who is logged on and what they are doing. .SH SYNOPSIS .B w .RI [ option " .\|.\|.\&]" .RI [ user ] .SH DESCRIPTION .B w displays information about the users currently on the machine, and their processes. The header shows, in this order, the current time, how long the system has been running, how many users are currently logged on, and the system load averages for the past 1, 5, and 15 minutes. .PP The following entries are displayed for each user: login name, the tty name, the remote host, login time, idle time, JCPU, PCPU, and the command line of their current process. .PP The JCPU time is the time used by all processes attached to the tty. It does not include past background jobs, but does include currently running background jobs. .PP The PCPU time is the time used by the current process, named in the "what" field. .SH OPTIONS .TP \fB\-c\fR, \fB\-\-container\fR show the container uptime instead of system uptime in the header. .TP \fB\-h\fR, \fB\-\-no\-header\fR Don't print the header. .TP \fB\-u\fR, \fB\-\-no\-current\fR Ignores the username while figuring out the current process and cpu times. To demonstrate this, do a .B su and do a .B w and a .BR "w \-u". .TP \fB\-s\fR, \fB\-\-short\fR Use the short format. Don't print the login time, JCPU or PCPU times. .TP \fB\-t\fR, \fB\-\-terminal\fR Usually .B w will use either the systemd sessions table or the utmp file to locate users. In \fIterminal mode\fR .B w will scan the terminal devices and locate user sessions this way. This is not a true count of users, for example a user with two xterms will show up twice, so the user count in the header will be different. Currently terminal devices scanned are \fI/dev/tty*\fR and \fI/dev/pts/*\fR. .TP \fB\-f\fR, \fB\-\-from\fR Toggle printing the .B from (remote hostname) field. The default as released is for the .B from field to not be printed, although your system administrator or distribution maintainer may have compiled a version in which the .B from field is shown by default. .TP \fB\-\-help\fR Display help text and exit. .TP \fB\-i\fR, \fB\-\-ip\-addr\fR Display IP address instead of hostname for \fBfrom\fR field. This option only works on non-systemd platforms as libsystemd only provides the remote host. .TP \fB\-p\fR, \fB\-\-pids\fR Display pid of the login process/the "what" process in the "what" field. The login process is also called the session leader. .TP \fB\-V\fR, \fB\-\-version\fR Display version information. .TP \fB\-o\fR, \fB\-\-old\-style\fR Old style output. Prints blank space for idle times less than one minute. .TP .B "user " Show information about the specified user only. .SH ENVIRONMENT .TP .B PROCPS_CONTAINER If $\fBPROCPS_CONTAINER\fR is set, then \fBw\fR behaves as if the \fB\-\-container\fR option has been given. .TP .B PROCPS_USERLEN Override the default width of the username column. Defaults to 8. .TP .B PROCPS_FROMLEN Override the default width of the from column. Defaults to 16. .SH FILES .TP .I /var/run/utmp information about who is currently logged on, only for non-systemd hosts. .TP .I /proc process information .TP .IR /dev/tty* " , " /dev/pts/* Terminal device files scanned with \fB\-\-terminal\fR mode. .SH BUGS .PP When using \fB\-\-terminal\fP option, .B w assumes processes with a parent PID of 0 or 1 are .BR agetty (8) processes and will not display them. This is prone to both false postive and negative errors. .PP Idle time for users on certain sessions, such as X/Wayland sessions, will be incorrect. The \fB\-\-terminal\fR option will show the correct idle times for terminal sessions on X/Wayland. .PP On platforms using .BR systemd (1) the \fB\-\-ip\-addr\fR option will be ignored and the from column will report the remote host as either a hostname or IP address. .SH REPORTING BUGS Please send bug reports to .MT procps@freelists.org .ME . .SH SEE ALSO .BR free (1), .BR loginctl (1), .BR ps (1), .BR systemd (1), .BR top (1), .BR uptime (1), .BR who (1), .BR utmp (5), .BR agetty (8)