How to use sed to remove the last n lines of a file
I want to remove some n lines from the end of a file. Can this be done using sed?
For example, to remove lines from 2 to 4, I can use
$ sed '2,4d' file
But I don't know the line numbers. I can delete the last line using
$sed $d file
but I want to know the way to remove n lines from the end. Please let me know how to do that using sed or some other method.
Answer
I don't know about sed, but it can be done with head:
head -n -2 myfile.txt