Manual Pages for UNIX Operating System command usage for man w

User Commands                                                w(1)



NAME
     w - display information about currently logged-in users

SYNOPSIS
     w [-hlsuw] [user]


DESCRIPTION
     The w command displays a summary of the current activity  on
     the  system,  including what each user is doing. The heading
     line shows the current time, the length of time  the  system
     has been up, the number of users logged into the system, and
     the average number of jobs in the run queue over the last 1,
     5 and 15 minutes.


     The fields displayed are: the user's login name, the name of
     the  tty  the user is on, the time of day the user logged on
     (in hours:minutes), the idle time-that  is,  the  number  of
     minutes   since   the   user   last   typed   anything   (in
     hours:minutes), the CPU time used by all processes and their
     children on that terminal (in minutes:seconds), the CPU time
     used by the currently active processes (in minutes:seconds),
     and the name and arguments of the current process.

OPTIONS
     The following options are supported:

     -h    Suppresses the heading.


     -l    Produces a long form of output, which is the default.


     -s    Produces a short form of output. In  the  short  form,
           the  tty  is abbreviated, the login time and CPU times
           are left off, as are the arguments to commands.


     -u    Produces the heading  line  which  shows  the  current
           time,  the  length of time the system has been up, the
           number of users logged into the system, and the  aver-
           age number of jobs in the run queue over the last 1, 5
           and 15 minutes.


     -w    Produces a long form of output, which is also the same
           as the default.


OPERANDS




SunOS 5.11          Last change: 19 Mar 2004                    1






User Commands                                                w(1)



     user    Name of a particular user for whom login information
             is  displayed. If specified, output is restricted to
             that user.


EXAMPLES
     Example 1 Sample Output From the w Command

       example% w


       10:54am  up 27 day(s), 57 mins,  1 user,  load average: 0.28, 0.26, 0.22
       User     tty            login@    idle     JCPU      PCPU       what
       ralph    console  7:10am    1       10:05   4:31     w



ENVIRONMENT VARIABLES
     See  environ(5) for descriptions of the  following  environ-
     ment  variables  that  affect  the execution of w: LC_CTYPE,
     LC_MESSAGES, and LC_TIME.

FILES
     /var/adm/utmpx    user and accounting information


ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | SUNWcs                      |
    |_____________________________|_____________________________|


SEE ALSO
     ps(1),   who(1),   whodo(1M),    utmpx(4),    attributes(5),
     environ(5)

NOTES
     The notion of the "current process" is unclear. The  current
     algorithm  is  "the highest numbered process on the terminal
     that is not ignoring interrupts, or, if there is  none,  the
     highest  numbered  process on the terminal". 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  pro-
     cess can be found, w prints -.



SunOS 5.11          Last change: 19 Mar 2004                    2






User Commands                                                w(1)



     The CPU time is only an estimate, in particular, if  someone
     leaves  a  background process running after logging out, the
     person currently on that terminal is  ``charged''  with  the
     time.


     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.


     w does not know about the conventions  for  detecting  back-
     ground jobs. It will sometimes find a background job instead
     of the right one.





































SunOS 5.11          Last change: 19 Mar 2004                    3