редактировать текст (edit text)
Имя (Name)
ed — edit text
Синопсис (Synopsis)
ed [-p string] [-s] [file]
Описание (Description)
The ed utility is a line-oriented text editor that uses two
modes: command mode and input mode. In command mode the input
characters shall be interpreted as commands, and in input mode
they shall be interpreted as text. See the EXTENDED DESCRIPTION
section.
If an operand is '-', the results are unspecified.
