What to find out how long command will take to run? Perhaps you need to know how long your capistrano deployment is taking to run.
Just type ‘time’ in front of your command and you’re done:
$ time ps aux ... root 14 0.0 0.1 77000 1896 ?? Ss 23Jul09 43:36.24 /usr/sbin/configd root 13 0.0 0.0 601332 632 ?? Ss 23Jul09 4:02.60 /usr/sbin/syslogd root 12 0.0 0.0 600236 440 ?? Ss 23Jul09 5:40.11 /usr/sbin/notifyd root 11 0.0 0.1 78872 3460 ?? Ss 23Jul09 8:05.65 /usr/sbin/DirectoryService root 10 0.0 0.0 75968 992 ?? Ss 23Jul09 0:01.82 /usr/libexec/kextd root 1 0.0 0.0 600820 536 ?? Ss 23Jul09 3:22.52 /sbin/launchd ... ps aux 0.01s user 0.04s system 6% cpu 0.694 total
That’s all there is to it.
From the man pages:
NAME time -- time command execution SYNOPSIS time [-lp] utility DESCRIPTION The time utility executes and times utility. After the utility finishes, time writes the total time elapsed, the time consumed by system overhead, and the time used to execute utility to the standard error stream. Times are reported in seconds.