Re: a perl question

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On Tue, 04 Jan 2011 12:05:29 +0100, Joachim wrote:

> On 01/04/2011 11:27 AM, S Mathias wrote:
> > cat asdf.txt
> > bla-bla
> > bla-bla
> > bla[XYZ]
> > importantthing
> > another important thing
> > [/XYZ]
> > bla-bla
> > bla-bla
> > [XYZ]
> > yet another thing
> > hello!
> > [/XYZ]
> > bla-bla
> > etc.
> > $ SOMEPERLMAGIC asdf.txt > output.txt
> > $ cat output.txt
> > importantthing
> > another important thing
> > yet another thing
> > hello!
> > 
> > 
> > how can i sovle this question? what is SOMEPERLMAGIC? are there any perl gurus, that have a little spare time?
> > 
> > Thank you! :\
> > 
> > 
> >       
> 
> Hi,
> 
> suppose the input data are saved in the file x.
> Then this little command line could help:
> 
>  perl -e 'while (<>) {/thing|hello/ && print}'<x
> 
> resp. create an executable file thing.pl with 2 lines
> 
> #!/usr/bin/perl
> while (<>) {/thing|hello/ && print}
> 
> and call
> 
> thing.pl <x
> or
> cat x|./thing.pl
> 
> This is you needed?

Very likely not. As I understand it, he wants a Perl script to filter
out arbitrary text between the opening and closing tags [XYZ] … [/XYZ].
It doesn't need a Perl "guru" to program something like that, but it's
a little bit of an exercize for somebody who wants to start programming
in Perl.
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