|The stupid question is the question not asked|
Your solution would truncate the OPs sample data before the first line. (Which also contains "SIL").
Ie. It would empty the file.
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
In reply to Re^2: removing lines that are in the end of a file