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 p1003.2-92.

The csh(1) has its own and syntactically different builtin version of time. The utility described here is available as /usr/bin/time to csh users.

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
csh(1), getrusage(2)

FILES
/usr/include/sys/resource.h

STANDARDS
The time utility conforms to p1003.2-92.

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.