time — Time a Simple Command
Synopsis
/usr/bin/time [-p] command [argument...]
Description
Use the time command to compute the time it takes a command to execute. time writes a message to standard error that lists timing statistics for command and the optional argument s. The message includes the following information.
The elapsed (real) time between invocation of command and its termination.
The user CPU time, equivalent to the sum of the tms_utime and tms_cutime fields returned by the times(2) function for the process in which command is executed.
The system CPU time, equivalent to the sum of the tms_stime and tms_cstime fields returned by the times() function for the process in which command is executed.
When time is used as part of a pipeline, ...
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