How to delete all lines in a text file using sed, starting with a certain one (for example, from the 5th)?

Question

linux

Can you tell me how to delete all lines in a text file using sed, starting with a certain one (for example, from the 5th)? Thank you.

Answer 1

[[email protected] ~]$ cat /etc/passwd | sed '4q'
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
adm:x:3:4:adm:/var/adm:/sbin/nologin
[[email protected] ~]$