From: Tim Pease <tim.pease@...>
Date: 2006-11-08T01:20:09+09:00
Subject: Re: How to make a cycling counter from commandline?

On 11/7/06, Tim Pease <tim.pease@gmail.com> wrote:
> On 11/7/06, darenbell@gmail.com <darenbell@gmail.com> wrote:
> > Hi, I'm looking for a way to implement this idea:
> >
> >
> > -------------------------------------
> > count=1
> > total=15
> >
> > until count>total
> >   print "Record #{count} of #{total} processed."
> >   count+=1
> > end
> > -------------------------------------
> >
> >
>
> $ cat tmp.rb
>
> STDOUT.sync = true
>
> total = ARGV[0] || 15

total = ARGV[0] || 15
total = Integer(total)    # need to turn any passed in arguments into an integer

> count = 1
>
> until count>total
>   print "\rRecord #{count} of #{total} processed"
>   count += 1
>   sleep 0.25
> end
>
> print "\n"
>
>
> That should do you what you want.  The secret is the carriage return
> "\r" at the beginning of the print string. That will bring the cursor
> back to the beginning of the line and then overwrite anything
> currently on that line.
>
> Blessings,
> TwP
>