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time(1)								      time(1)



NAME
  time - Times the execution of	a command

SYNOPSIS

  time [-p] command [argument ...]

  The time command prints the elapsed time during the execution	of a command,
  the time spent in the	system,	and the	time spent in execution	of the com-
  mand on the diagnostic output	system.

FLAGS

  -p  Writes the timing	output to standard error.  This	is the default.

DESCRIPTION

  The time command prints the elapsed time during the execution	of a command,
  the time spent in the	system,	and the	time spent in execution	of the com-
  mand on the diagnostic output	system.	Time is	reported in seconds.

  The time command (with a different format) is	also built into	csh.

EXAMPLES

  To measure the time required to run a	program, enter:

       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


EXIT VALUES

  The time command returns the following exit values:

  1-125	An error occurred.

  126	The utility was	found but could	not be invoked.

  127	The utility could not be found.

RELATED	INFORMATION

  Functions:  times(3).