delete first 100 lines from a file - SUN Solaris

salaathi · #1 (**permalink**) 11-14-2007

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.

Yogesh Sawant · #2 (**permalink**) 11-14-2007

Code:

sed '1,100d' filename > newfile

sed would be faster than tail in my opinion

matrixmadhan · #3 (**permalink**) 11-14-2007

if -i option is available in sed ( GNU sed )

use it for in-place modification

Code:

sed -i '1,100d' filename

salaathi · #4 (**permalink**) 11-15-2007

Yes. Its really faster than the tail command.

Thanks Yogesh

Sarathi

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