NAME

time − time a command

SYNOPSIS

time command

DESCRIPTION

The given command is executed.  After execution is complete, time prints the elapsed time during the command, the time spent in the system, and the time spent in execution of the command.  Times are reported in seconds. 

On a PDP-11, the execution time can depend on what type of memory in which the program is stored; the user time in MOS is often half the amount it is in core. 

The times are printed on the diagnostic output stream. 

Time is built in to csh(1), using a different output format. 

BUGS

Elapsed time is accurate to the second, while the CPU times are measured to the 60th second.  Therefore, the sum of the CPU times can be up to a second larger than the elapsed time. 

Time is a built-in command to csh(1), with a much different syntax.  This command is available as “/bin/time” to csh users. 

4th Berkeley Distribution  —  %W%%Q%%Y%