usr/man/cat1/time.0



TIME(1)             UNIX Programmer's Manual              TIME(1)


N\bNA\bAM\bME\bE
     time - time a command

S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS
     t\bti\bim\bme\be [-l] command

D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN
     The given command is executed; after it is complete, _\bt_\bi_\bm_\be
     prints the elapsed time during the command, the time spent
     in the system, and the time spent in execution of the com-
     mand.  Times are reported in seconds.  If the -\b-l\bl option is
     supplied, the contents of the _\br_\bu_\bs_\ba_\bg_\be structure are printed
     as well.

     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,
     ``stderr''.

     _\bT_\bi_\bm_\be is a built-in command to _\bc_\bs_\bh(1), with a much different
     syntax.  This command is available as ``/bin/time'' to _\bc_\bs_\bh
     users.

B\bBU\bUG\bGS\bS
     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.

S\bSE\bEE\bE A\bAL\bLS\bSO\bO
     include/sys/h/resource.h


Printed 7/9/88          November 17, 1987                       1