How to remove the 15th first line of a massive text file?

[hasannoori]

Hi guys

I have a much massive text file with about 6Gb of data.

I want to remove for example first 15 lines of file, but how?
you may say that the answer is easy: "use gedit";
but since may file is much massive gedit and nano
cann't open the file in a finite time.
I'm using the following script:

#!/bin/sh
tail -n +num filename.txt > result_filename.txt

(whereas num mean the numbber)

I think that it dos not work properly,
because I cann't verify the result file.

Any suggestion or advise are welcome!

[Zugzwang]

tail -n +16 filename.txt > result_filename.txt


Tail outputs the result to the terminal unless you reroute it to your target file. Always route the data to a different file.

[yeleek]

# delete the first 10 lines of a file
sed '1,10d'

change appropriately

http://sed.sourceforge.net/sed1line.txt

[hasannoori]

tail -n +16 filename.txt > result_filename.txt


Tail outputs the result to the terminal unless you reroute it to your target file. Always route the data to a different file.

Thank for you response.

I know, I used the same code.

the code I wrote at the first was wrong!