15 The sed
Editor
In This Chapter
The sed
(stream editor) utility is a batch (noninteractive) editor. It transforms an input stream that can come from a file or standard input. It is frequently used as a filter in a pipe. Because it makes only one pass through its input, sed
is more efficient than an interactive editor such as ed
.
Syntax
A sed
command line has the following syntax:
sed [-n] program [file-list]sed [-n] -f program-file [file-list]
The sed
utility takes its input from files you specify on the command line or from standard input. Unless you direct output from sed
elsewhere, it goes to standard output. ...
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