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time(1)                   BSD General Commands Manual                  time(1)


NAME

     time -- time command execution


SYNOPSIS

     time [-lp] utility


DESCRIPTION

     The time utility executes and times utility.  After the utility finishes,
     time writes the total time elapsed, the time consumed by system overhead,
     and the time used to execute utility to the standard error stream.  Times
     are reported in seconds.

     Available options:

     -l      The contents of the rusage structure are printed.

     -p      The output is formatted as specified by IEEE Std 1003.2-1992
             (``POSIX.2'').

     Some shells may provide a builtin time command which is similar or iden-
     tical to this utility.  Consult the builtin(1) manual page.


DIAGNOSTICS

     The time utility shall exit with one of the following values:

     1-125   An error occurred in the time utility.

     126     The utility was found but could not be invoked.

     127     The utility could not be found.

     Otherwise, the exit status of time shall be that of utility.


SEE ALSO

     builtin(1), csh(1), getrusage(2)


FILES

     /usr/include/sys/resource.h


STANDARDS

     The time utility conforms to IEEE Std 1003.2-1992 (``POSIX.2'').


BUGS

     The granularity of seconds on microprocessors is crude and can result in
     times being reported for CPU usage which are too large by a second.

BSD                              June 6, 1993                              BSD

OS X 10.10 - Generated Wed Oct 29 18:53:24 CDT 2014
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