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delete first 100 lines from a file


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delete first 100 lines from a file.
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Old Unix and Linux 11-15-2007   -   Original Discussion by salaathi
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Unix or Linux Question delete first 100 lines from a file

I have a file with 28,00,000 lines of rows in this the first 80 lines will be chunks .

I want to delete the chunks of 80 lines. I tried tail -f2799920 filename.
is there any efficient way to do this.

Thanks in advance.