NAME
time — time a command
SYNOPSIS
time
command
XPG4 only
time
[-p]
utility
[argument ...]
DESCRIPTION
command
is executed.
Upon completion,
time
prints the elapsed time during the command,
the time spent in the system,
and the time spent executing the command.
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 on standard error.
Note that the shell also has a keyword
time
that times an entire pipeline if used anywhere in the pipeline,
unlike
time(1)
command which times a particular command if used in a pipeline.
Options
time
recognizes the following option:
- -p
(XPG4 only.) Writes the timing statistics to standard error.
STANDARDS CONFORMANCE
time: SVID2, XPG2, XPG3, XPG4, POSIX.2
