I am using a more complex version of 
while (<FILE>) {
  print;
  if (/$pattern/) {
    &do_some_other_thing;
  }
}

[download]
is there a way I can manipulate $_ or some other variable that can find a pattern in a line, and then grab information from the previous line(s)? I may encounter difficulty in storing the whole file in an array of lines (it's about 4 MB).

In reply to read lines... wait, back up? by Konda

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