time(1)                                                   time(1)



     NAME
          time - time a command

     SYNOPSIS
          time command

     DESCRIPTION
          time executes the command; afterward, time prints the
          elapsed time during the command, the time spent in the sys-
          tem, and the time spent in execution of the command.  Times
          are reported in seconds.

          The times are printed on the standard error output.

     EXAMPLES
               time nroff -mm filea

          will, in sh, perform the formatting and report the time at
          the end of the file, e.g.:

               real  22.0
               user   8.6
               sys    6.4

          In csh, where time is a built-in command, the time report
          might be:

               8.9u  7.0s  0:29  54%

          which reports, respectively, the user time, system time,
          real time, and percentage of real time that the CPU was ac-
          tive, which is the sum of the user and system times divided
          by the real elapsed time.

     FILES
          /bin/time

     SEE ALSO
          csh(1), timex(1), times(2).
















     April, 1990                                                     1