You have two nested loops using $i as the looping variable. Just change the inner one to something else: 

for my $j($a..$b){
  print $write_tmp_app_log $lines[$j]
};

[download]

UPDATE: added my to $j.

UPDATE: avoid the inner loop altogether:

print $write_tmp_app_log @lines[$a..$b];

UPDATE: I guess if you just had added a my to the $i in the inner loop like for my $i($a..$b){ it would work as well but for my personal feeling that would be to dangerous.

In reply to Re: Print 5 lines before and after pattern match from a list by hdb
in thread Print 5 lines before and after pattern match from a list by jayu_rao

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