You can use Vim in Ex mode:

ex -sc '1d5|x' file 

1. 1 move to first line

2. 5 select 5 lines

3. d delete

4. x save and close

You can use Vim in Ex mode:

ex -s -c '1d5|x' file 

1. 1 move to first line

2. 5 select 5 lines

3. d delete

4. x save and close

You can use Vim in Ex mode:

ex -sc '1,5d|x' file 

1. 1,5 select first 5 lines

2. d delete

3. x save and close

You can use Vim in Ex mode:

ex -sc '1d5|x' file 

1. 1 move to first line

2. 5 select 5 lines

3. d delete

4. x save and close