time

PURPOSE

     Times the execution of a command.

SYNOPSIS
     time command


DESCRIPTION

     The  time  command  times  the  execution  of  the  named
     command.  time writes to  standard error the elapsed time
     of the command,  the system time used,  and the execution
     time, in seconds.

EXAMPLES

     1.  To measure the time required to run a program:

           time  a.out

         This  runs  the  program  a.out  and  writes  to  the
         standard error output the amount of real, system, and
         user time that it uses:

           real       10.5
           user        0.3
           sys         3.6

     2.  To save a record of the time information in a file:

           time  a.out  2> a.time

RELATED INFORMATION

     The following commands:  "csh" and "timex."

     Note:   The csh  command contains  a built-in  subcommand
     named  time.  The  command and  subcommand do  not neces-
     sarily work the same way.  For information on the subcom-
     mand, see the csh command.

     The times  system call in AIX  Operating System Technical
     Reference.