Package ed

The GNU line editor

https://www.gnu.org/software/ed/

ed is a line-oriented text editor, used to create, display, and modify text
files (both interactively and via shell scripts). For most purposes, ed has been
replaced in normal usage by full-screen editors (emacs and vi, for example).

Version: 1.18

General Commands

ed line-oriented text editor
red alias for ed