how to time a process in bash? [closed]

Question

Possible Duplicate:
Measure script execution time

How would I time how long it takes for my script foo.sh to run?

I'm looking for something akin to tic and toc in MATLAB.

mbx · Answer 1 · 2011-04-04 00:06:13Z

up vote 2 down vote accepted

Use the unix time command

time ./sript.sh

If you're interested in ticks, you can approximate it with a little help from /proc/cpuinfo

answered Apr 4 '11 at 0:06

mbx
2781312

	`time is a shell keyword` – Hello71 Apr 25 '11 at 23:21
	@Hello71 my linux `bash` does not provide a time command, it uses `/usr/bin/time`. However `zsh` does, as well as my solaris `tcsh`. So even if it's not builtin your shell, you have a time provided by your userland as a fallback. Besides, those time commands may provide a slightly different output. – mbx Apr 26 '11 at 9:45
	@mbx: As of version 2.0 of Bash, time became a shell reserved word, with slightly altered behavior in a pipeline. – Hello71 Apr 26 '11 at 20:04
	@Hello71 although reserved, on that ystem `which time` returns userland time instead of the reserved keyword warning – mbx Apr 26 '11 at 21:20
	@mbx: `which` never does that. I'm referring to `type`. – Hello71 Apr 26 '11 at 21:21

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Jonathan Khoo · Answer 2 · 2011-04-04 00:07:03Z

up vote 1 down vote

time can achieve this. In this case:

$ time foo.sh

answered Apr 4 '11 at 0:07

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closed as exact duplicate by Wuffers, studiohack♦ Apr 4 '11 at 1:52