time.1 (2010 09)

time(1) time(1)

NAME

time - time a command

SYNOPSIS

time command

time [-p] utility [argument ...]

DESCRIPTION

When a speciﬁed command or utility completes execution,

time prints the elapsed time during the com-

mand or utility, the time spent in the system, and the time spent executing the command or utility.

Times are reported in seconds.

Execution time can depend on the performance of the memory in which the program is running.

The times are printed to standard error.

Note that the shell also has a keyword

time that times an entire pipeline if used anywhere in the pipe-

line. This action is different than the

time command which times a particular command if used in a

pipeline.

Options

time recognizes the following options:

command

The command to be executed and timed.

-p Writes the timing statistics to standard error.

utility The name of a utility to be invoked and timed. If the utility operand names any of the

shell special built-in utilities, the time results are undeﬁned. See csh(1) and ksh(1) for

information about special built-in utilities.

argument

Any string that is an argument to the utility .

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time(1) time(1) NAME time - time a command SYNOPSIS time command time [-p] utility [argument ...] DESCRIPTION When a specified command or utility completes execution, time prints the elapsed time during the command or utility, the time spent in the system, and the time spent executing the command or utility. Times are reported in seconds. Execution time can depend on the performance of the memory in which the program is running. The times are printed to standard error.
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(Notes) A (Notes) tA 2 Hewlett-Packard Company −1− HP-UX 11i Version 3: September 2010