Linux cli command who

➡ A Linux man page (short for manual page) is a form of software documentation found on Linux and Unix-like operating systems. This man-page explains the command who and provides detailed information about the command who, system calls, library functions, and other aspects of the system, including usage, options, and examples of _. You can access this man page by typing man followed by the who.

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NAME 🖥️ who 🖥️

show who is logged on

SYNOPSIS

who [OPTION]… [ FILE | ARG1 ARG2 ]

DESCRIPTION

Print information about users who are currently logged in.

-a, –all
same as -b -d –login -p -r -t -T -u

-b, –boot
time of last system boot

-d, –dead
print dead processes

-H, –heading
print line of column headings

-l, –login
print system login processes

–lookup
attempt to canonicalize hostnames via DNS

-m
only hostname and user associated with stdin

-p, –process
print active processes spawned by init

-q, –count
all login names and number of users logged on

-r, –runlevel
print current runlevel

-s, –short
print only name, line, and time (default)

-t, –time
print last system clock change

-T, -w, –mesg
add user’s message status as +, - or ?

-u, –users
list users logged in

–message
same as -T

–writable
same as -T

–help
display this help and exit

–version
output version information and exit

If FILE is not specified, use /var/run/utmp. /var/log/wtmp as FILE is common. If ARG1 ARG2 given, -m presumed: ‘am i’ or ‘mom likes’ are usual.

AUTHOR

Written by Joseph Arceneaux, David MacKenzie, and Michael Stone.

REPORTING BUGS

GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>

COPYRIGHT

Copyright © 2023 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

Full documentation <https://www.gnu.org/software/coreutils/who>
or available locally via: info ‘(coreutils) who invocation’

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