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 Forum index » Off-Topic Area » Programming
How to scrape rxvt screen for text ?
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sunburnt


Joined: 08 Jun 2005
Posts: 5010
Location: Arizona, U.S.A.

PostPosted: Sat 06 Feb 2010, 03:24    Post subject:  How to scrape rxvt screen for text ?  

I think 8-bit also asked this Q...
How to get rxvt`s screen output while it`s running a CLI app.

Need last line of the rxvt screen output while it`s running vobcopy.
Sometimes the movie size is stated wrong ( how do they do that ? ).
But once vobcopy is running the movie size is stated correctly.
This will help automate the ripping process.
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technosaurus


Joined: 18 May 2008
Posts: 4281

PostPosted: Sat 06 Feb 2010, 03:38    Post subject:  

I don't have a dvd handy but
vobcopy -I <something.vob> |tail -1

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sunburnt


Joined: 08 Jun 2005
Posts: 5010
Location: Arizona, U.S.A.

PostPosted: Sat 06 Feb 2010, 15:34    Post subject:  

Thanks technosaurus, I`ll give it a try and let you know...
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Flash
Official Dog Handler


Joined: 04 May 2005
Posts: 10937
Location: Arizona USA

PostPosted: Sat 06 Feb 2010, 22:32    Post subject:  

The way to copy and paste in rxvt is known only to the guy who wrote rxvt and a few of his closest friends. You'd think it would be in rxvt's help menu, but nooooo. Evil or Very Mad

I seem to remember once highlighting some text in rxvt and using something like ctrl-s to copy and ctrl-v to paste.
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technosaurus


Joined: 18 May 2008
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PostPosted: Sun 07 Feb 2010, 01:25    Post subject:  

middle click to cut/paste in rxvt, but it sounded like sunburnt needed the text in a script... perhaps I misinterpreted
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Flash
Official Dog Handler


Joined: 04 May 2005
Posts: 10937
Location: Arizona USA

PostPosted: Sun 07 Feb 2010, 09:14    Post subject:  

I copied this from a rxvt window, then pasted it into the forum compose window by simultaneously clicking the left- and right- click buttons after highlighting the text in rxvt, and clicking them again in the empty compose window:
Code:
# growisofs -M /dev/dvd -D -R -l -new-dir-mode 0755 -graft-points dotPets=/tmp/dotPets
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sunburnt


Joined: 08 Jun 2005
Posts: 5010
Location: Arizona, U.S.A.

PostPosted: Sun 07 Feb 2010, 13:57    Post subject:  

Flash; You use the middle button ( scroll button ) to paste in rxvt and xterm.
BUT... The copy text HAS to be highlighted... Not copied...
You can paste into rxvt, from rxvt, and within rxvt this way.
Why it behaves this why is beyond comprehension.

technosaurus is correct though...
I need a script to be able to read the text being displayed in rxvt,
so in the usual Linux fashion redirecting to a file is probably needed.
technosaurus; I tried these: ( "-I" gives info )
Code:
vobcopy -f -o /mnt/sda6/v/bicentennialMan.vob |tail -1 > /tmp/vobTEST

rxvt -e vobcopy -f -o /mnt/sda6/v/bicentennialMan.vob |tail -1 > /tmp/vobTEST

rxvt -e vobcopy -f -o /mnt/sda6/v/bicentennialMan.vob |tail -1 2> /tmp/vobTEST

rxvt -e vobcopy -f -o /mnt/sda6/v/bicentennialMan.vob > /tmp/vobTEST

rxvt runs vobcopy and creates the file: /tmp/vobTEST but the file is empty.
I tried it without "|tail -1" just to simplify it and it did the same thing.

I don`t recall this ever being done, there`s lots of uses for it though...

Last edited by sunburnt on Thu 11 Feb 2010, 15:39; edited 4 times in total
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Flash
Official Dog Handler


Joined: 04 May 2005
Posts: 10937
Location: Arizona USA

PostPosted: Sun 07 Feb 2010, 14:16    Post subject:  

sunburnt wrote:
Flash; You use the middle button ( scroll button ) to paste in rxvt and xterm.

But I don't have a middle button. Smile (Simultaneously clicking both the left and right mouse buttons does the same thing as clicking a middle button, if you have one.)

Anyway, I finally understood what you meant. As usual, I was way off target. Laughing
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technosaurus


Joined: 18 May 2008
Posts: 4281

PostPosted: Thu 11 Feb 2010, 10:11    Post subject:  

if you could post the output you want to get at, it would be easier to help
just do

vobcopy ... >output 2>errors

There is an example in woo-ff for grepping the resolution using ffmpeg

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