From: Matt Harrison <iwasinnamuknow@...>
Date: 2008-08-20T08:45:34+09:00
Subject: Re: overprinting characters

Rob Biedenharn wrote:
> 
> On Aug 19, 2008, at 6:20 PM, Matt Harrison wrote:
> 
>> I have a script that does things to large files > 1Gb and I want to be
>> able to show the percentage through the current file.
>>
>> I know exactly how I will get the percentage, but I want to know how to
>> display it in the terminal.
>>
>> What I would like is the name of the current file, then on the next
>> line, "currentbytes/totalbytes [xx%]" and I want it to update the
>> characters in place without writing hundreds of lines to the terminal.
>>
>> I think I want to be able to position the cursor back to the beginning
>> of the current line but I have no idea how to do this in ruby.
>>
>> Grateful for any ideas
>>
>> Thanks
>>
>> Matt
> 
> In addition to print "\r" you might want to look at the docs for
> ProgressBar
> 
> http://raa.ruby-lang.org/project/progressbar/
> 
> I can't remember where I used this or I'd drop an example in here, but
> it gives to a bar similar to what sftp or curl shows on downloads (it
> even gives a time to complete estimate).
> 
> -Rob

Excellent, first I managed to get it working as I said in my post,
thanks to Axel's link. Now I am trying the progress bar as Rob
suggested. It's good but I can't work out how the format is used.

I'm trying to expand the amount of text displayed in the title so I can
see the entire file and path.

Any extra help is appreciated but thanks for what you've done so far ;)

Matt