How did you determine that your while loop never gets executed?

Also, /[ARTEC]/ likely does not match what you expect it to match, given your input file. See perlre about character classes. Most likely, you wanted /^\[ARTEC\]$/.

In reply to Re: search and replace pattern inside file not working as expected by Corion
in thread search and replace pattern inside file not working as expected by matze77

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