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If I wanted to find something like the "time" feature on shell...

where you can do:

time ls

and it will tell you how long it took to execute...

How would I do this in Ruby or what is the packaged that can do this for
me? I want it to kick off as soon as the script gets called and just
print the time taken to execute at the end of the script.

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Posted via http://www.ruby-forum.com/.

On Tue, 13 Dec 2005, Oscar Gonzalez wrote:

> If I wanted to find something like the "time" feature on shell...
>
> where you can do:
>
> time ls
>
> and it will tell you how long it took to execute...
>
> How would I do this in Ruby or what is the packaged that can do this for
> me? I want it to kick off as soon as the script gets called and just
> print the time taken to execute at the end of the script.

harp:~ > cat elapsed.rb
BEGIN{ $start_time = Time::now.to_f }
END{ $end_time = Time::now.to_f; puts "#{ $0 } elapsed: #{ $end_time - $start_time} }" }

harp:~ > cat a.rb
sleep 2 and p 42

harp:~ > ruby -r elapsed a.rb
42
a.rb elapsed: 1.99891686439514 }

or

harp:~ > cat a.rb
#!/usr/bin/env ruby
sleep 2 and p 42

harp:~ > RUBYOPT="-relapsed" ./a.rb
42
./a.rb elapsed: 1.99908494949341 }

hth.

-a
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