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sed, a stream editor

sed, a stream editor

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1. Introduction
2. Invocation
3. sed Programs		sed programs
4. Some Sample Scripts		Some sample scripts
5. GNU sed's Limitations and Non-limitations		Limitations and (non-)limitations of GNU sed
6. Other Resources for Learning About sed		Other resources for learning about sed
7. Reporting Bugs		Reporting bugs

A. Extended regular expressions

egrep-style regular expressions

Concept Index		A menu with all the topics in this manual.
Command and Option Index		A menu with all sed commands and command-line options.

--- The detailed node listing ---

sed Programs:

3.1 Selecting lines with sed
3.2 Overview of Regular Expression Syntax		Overview of regular expression syntax
3.3 Where sed Buffers Data		Where sed buffers data
3.4 Often-Used Commands		Often used commands
3.5 The s Command		sed's Swiss Army Knife
3.6 Less Frequently-Used Commands		Less frequently used commands
3.7 Commands for sed gurus
3.8 Commands Specific to GNU sed		Commands specific of GNU sed
3.9 GNU Extensions for Escapes in Regular Expressions		Specifying special characters

Examples:

4.1 Centering Lines
4.2 Increment a Number
4.3 Rename Files to Lower Case
4.4 Print bash Environment
4.5 Reverse Characters of Lines
4.6 Reverse Lines of Files		Reverse lines of files
4.7 Numbering Lines		Numbering lines
4.8 Numbering Non-blank Lines		Numbering non-blank lines
4.9 Counting Characters		Counting chars
4.10 Counting Words		Counting words
4.11 Counting Lines		Counting lines
4.12 Printing the First Lines		Printing the first lines
4.13 Printing the Last Lines		Printing the last lines
4.14 Make Duplicate Lines Unique		Make duplicate lines unique
4.15 Print Duplicated Lines of Input		Print duplicated lines of input
4.16 Remove All Duplicated Lines		Remove all duplicated lines
4.17 Squeezing Blank Lines		Squeezing blank lines