time(1) [bsd man page]

TIME(1) 						      General Commands Manual							   TIME(1)

NAME

       time - time a command

SYNOPSIS

       time command

DESCRIPTION

       The given command is executed; after it is complete, time prints the elapsed time during the command, the time spent in the system, and the
       time spent in execution of the command.	Times are reported in seconds.

       On a PDP-11, the execution time can depend on what kind of memory the program happens to land in; the user time in MOS is often	half  what
       it is in core.

       The times are printed on the diagnostic output stream.

       Time is built in to csh(1), using a different output format.

BUGS

       Elapsed time is accurate to the second, while the CPU times are measured to the 100th second.  Thus the sum of the CPU times can be up to a
       second larger than the elapsed time.

       Time is a built-in command to csh(1), with a much different syntax.  This command is available as ``/bin/time'' to csh users.

4th Berkeley Distribution					  April 29, 1985							   TIME(1)

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 identical 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