Re: a perl question

[Michael Schwendt]

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.