For removing the first lines from file use this command,
tail +(n+1) where ‘n’ is the number of lines you want to remove,
If you want to remove first 3 lines then use,
more filename.txt | tail +4
For removing the first lines from file use this command,
tail +(n+1) where ‘n’ is the number of lines you want to remove,
If you want to remove first 3 lines then use,
more filename.txt | tail +4