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shell script for finding average runtime of other script


 
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# 1  
Old 10-11-2011
shell script for finding average runtime of other script

so I've made a shell script that downloads 6 files in succession from a given url, then deletes them. Now I want to time the script, and the average time it uses by running it ~100 times. My problem is tho, how do I store the time it takes for each run through of the script? I know time writes to standard error, but I'm a total noob when it comes to shell scripting so I couldn't get it to work.
from what I gathered I can use

prog 2>&1

to send it stderr to stdout, but how do I now use the value I want?
what I get when I run my timer is 0.00user 0.01system 0:00.35elapsed and a lot of useless info (at least to me, only interested in elapsed time)
I only want the elapsed time so I can calculate on it later, and I need to send it into a variable so that I can add up 100 runs of the script.


Anyone with a decent clue got any pointers to send me in the right direction? Smilie

Last edited by navlelo; 10-11-2011 at 04:41 PM..
# 2  
Old 10-12-2011
man time, for example, get the time :
Code:
time prog  |awk '/^real/{print $2}'

This User Gave Thanks to rdcwayx For This Post:
# 3  
Old 10-12-2011
ah yeh, thanks man. if you could look into the snippet at the end of http://unix.com/homework-coursework-...e-runtime.html , does the same with awk, but I need to run it in bc, have a look please <3 Smilie

Last edited by pludi; 10-12-2011 at 04:53 AM..
# 4  
Old 10-12-2011
Closed due to double posting and homework. Next time it's an infraction for each of those.

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