On Wed, Nov 21, 2001 at 12:33:35PM -0500, Michael G. Schabert wrote:
> Actually, I think he's asking not for a pre-estimate, but rather if 
> there's a way that he can tell how long it took after he does it.

Ha, maybe

> 
> There's a few ways to do this, depending on your shell. Some shells 
> have a built-in timer function. There is also a system command 
> "time", which can prepend other commands, much like "nice" can. So 
> you can type "time make build". If you're using one of the shells 
> with a built-in time function, you can even set it up so that any 
> command that takes longer than "x" seconds automagically prints out 
> how long it took after it completes...but note that the default 
> format of the shell-time is different than the /usr/bin/time.
> 
> Another way that you can do it is to use cron to perform the make 
> build. The first line printed after typing "make build" is "build 
> started at xxx date/time" or similar. Cron jobs are e-mailed to the 
> owner after completion. So you can see that it started at, say 9am 
> and the date on the email showed that cron sent it at 8pm, giving you 
> an 11 hour compile time.

And, the easiest maybe:
make build >& build.log (or make build > build.log 2>&1 if you're using sh)
and look at the content of make.log :)

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
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