(sed.info)sed Programs

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3 `sed' Programs
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A `sed' program consists of one or more `sed' commands, passed in by
one or more of the `-e', `-f', `--expression', and `--file' options, or
the first non-option argument if zero of these options are used.  This
document will refer to "the" `sed' script; this is understood to mean
the in-order catenation of all of the SCRIPTs and SCRIPT-FILEs passed
in.

   Each `sed' command consists of an optional address or address range,
followed by a one-character command name and any additional
command-specific code.

Execution Cycle

How `sed' works

Addresses

Selecting lines with `sed'

Regular Expressions

Overview of regular expression syntax

Common Commands

Often used commands

The "s" Command

`sed''s Swiss Army Knife

Other Commands

Less frequently used commands

Programming Commands

Commands for `sed' gurus

Extended Commands

Commands specific of GNU `sed'

Escapes

Specifying special characters