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who command help


       who - show who is logged on
 

SYNOPSIS

       who [OPTION]... [ FILE | ARG1 ARG2 ]
 

DESCRIPTION

       -H, --heading
              print line of column headings
 
       -i, -u, --idle
              add user idle time as HOURS:MINUTES, . or old
 
       -l, --lookup
              attempt to canonicalize hostnames via DNS
 
       -m     only hostname and user associated with stdin
 
       -q, --count
              all login names and number of users logged on
 
       -s     (ignored)
 
       -T, -w, --mesg
              add user's message status as +, - or ?
 
       --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.
 

REPORTING BUGS

       Report bugs to <[email protected]>.
 

SEE ALSO

       The  full documentation for who is maintained as a Texinfo
       manual.   If  the  info  and  who  programs  are  properly
       installed at your site, the command
 
              info who
 
       should give you access to the complete manual.
 
       Copyright © 1999 Free Software Foundation, Inc.
       This  is  free software; see the source for copying condi­
       tions.  There is NO warranty; not even for MERCHANTABILITY
       or FITNESS FOR A PARTICULAR PURPOSE.
 

   

Comments - most recent first
(Please feel free to answer questions posted by others!)

Shellie     (09 Apr 2012, 19:51)
The functionality of the 'who' command on my server has changed. Up until about 6 weeks ago it worked the way it should. Now when I issue 'who' I do not see the other logged in users. I only see the user I am logged in as.

This server is a virtual server in hosted environment. So, I not necessarily informed about all the server admin activity that goes on.

I inquired with the appropriate tech support, but was blown off with a response that suggested our version of Linux (a fairly current versions of RHEL) might not support the 'who' command. I say hogwash. I am absolutely certain that I have used the command successfully in the not too distant past and certainly in our RHEL environment.

Do you have any suggestions for what might cause this change?

Many thanks,

Shellie

I welcome your comments. However... I am puzzled by many people who say "Please send me the Linux tutorial." This website *is* your Linux Tutorial! Read everything here, learn all you can, ask questions if you like. But don't ask me to send what you already have. :-)

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