Re: open a file for input

Wed, 24 Nov 2004 16:35:16 -0800

FlashMX wrote: 
Right...but my problem is I don't want the substitutions to
happen on ALL the lines matched. Notice from the below input
and output examples I do a grep to search for "0 AAA ".
I then do a substitution on "0 AAA " to "0 AAA BBB ". Then
the first occurence of "XXX" after the "0 AAA " substitution
gets replaced with "111 XXX" and ALL other "XXX" gets ignored
(no substution on these) until the next "0 AAA " and so on...

I have also included by script below. The below script substitues
the first match by using ?XXX? in the GREP but not the next "XXX"
following next grep match on "0 AAA "

I'm starting to babble...

Here is the input file:

0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 You want to find what. You want to find what? 0 0 0 AAA 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 XXX 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 XXX 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 XXX 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 You want to find what. You want to find what? 0 0 0 AAA 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 XXX 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 XXX 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 XXX 

Here is what the output file should look like:

0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 You want to find what. You want to find what? 0 0 0 AAA BBB 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 111 XXX 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 XXX 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 XXX 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 You want to find what. You want to find what? 0 0 0 AAA BBB 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 111 XXX 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 XXX 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 0101 XXX 

According to your specs, this will do what you want:

perl -i -lpe's/0 AAA /0 AAA BBB / && reset; ?XXX? && s/XXX /111 XXX /' file.in


John
--
use Perl;
program
fulfillment

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