solaris - w (1)

     w - who is logged in, and what are they doing

     w [ -hlsuw ] [ user ]

     SUNWcsu

     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 users 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),
     the name and arguments of the current process.

     If a user name is included, output  is  restricted  to  that
     user.

     -h         Suppress the heading.

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

     -s         Produce 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  average  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.

     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

     If any  of  the  LC_*  variables  (  LC_CTYPE,  LC_MESSAGES,
     LC_TIME,  LC_COLLATE,  LC_NUMERIC,  and  LC_MONETARY  ) (see
     environ(5)) are not set in the environment, the  operational
     behavior  of  tar  for each corresponding locale category is
     determined by the value of the  LANG  environment  variable.
     If LC_ALL is set, its contents are used to override both the
     LANG and the other LC_* variables.  If  none  of  the  above
     variables  is  set in the environment, the "C"  (U.S. style)
     locale determines how tar behaves.

     LC_CTYPE
          Determines how tar handles characters. When LC_CTYPE is
          set  to  a valid value, tar can display and handle text
          and filenames  containing  valid  characters  for  that
          locale.   tar can display and handle Extended Unix code
          (EUC) characters where any individual character can  be
          1, 2, or 3 bytes wide.  tar can also handle EUC charac-
          ters of 1, 2, or more column widths. In the "C" locale,
          only characters from ISO 8859-1 are valid.

     LC_MESSAGES
          Determines how diagnostic and informative messages  are
          presented.  This includes the language and style of the
          messages, and the correct form of affirmative and nega-
          tive  responses.   In  the "C" locale, the messages are
          presented in the default  form  found  in  the  program
          itself (in most cases, U.S. English).

     LC_TIME
          Determines how tar handles date and time  formats.   In
          the  "C" locale, date and time handling follow the U.S.
          rules.

     /var/adm/utmp

     ps(1), who(1), whodo(1M), utmp(4)

     The notion of the ``current process'' is muddy.  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 -.
     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.