How do I process lines in a file from the point where a line contains a certain word ?
I have a file that I wish to process. e.g. 
a line
another line
internal name
another line
a further line
need this
another line
need this

[download]
I want to start processing the file where the line begins with "internal name". After this I only want to process the lines that have "need this" in them until end of file. Where "need this" always occurs at the beginning of the line.
I can't use seek because I don't know how many lines will be in the file and at what position the "internal name" first appears.
I tried doing something like this but it doesn't work 
open DATA,filename;

while (<DATA>) {
 chomp;
 next unless (/^internal name/);
 next unless (/^need this/);
   do something with data
 }
close DATA;

[download]
This doesn't work because each time round the loop it searches for "internal name".
These are variable length records per line and the file is a variable number of lines long.
Any help appreciated

In reply to seek and process from there on by Anonymous Monk

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