It is the second half of the syntax below that is incorrect. I am trying to only consider lines that do not start with the entire phrase "A pdb file". Currently, the syntax I wrote will also exclude any file that starts with "A". How can I avoid this? 

if ( /^\w[\s]+\w/ and not /^["A pdb file"]/ )

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In reply to Match entire string, not just first character by SuzuBell

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