Linux in a Nutshell, Fifth Edition

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Chapter 10: The sed Editor

This is the Title of the Book, eMatter Edition

Copyright © 2006 O’Reilly & Associates, Inc. All rights reserved.

r

[address]r file

[address1[,address2]]r file {G}

Read contents of file and append to the output after the contents of

the pattern space. There must be exactly one space between the r

and the filename. The GNU version accepts two addresses.

Example

/The list of items follows:/r item_file

R

[address1[,address2]]R file {G}

Read one line of file and append to the output after the contents of

the pattern space. Successive R commands read successive lines

from file.

s

[address1[,address2]]s/pattern/replacement/[flags]

Substitute replacement for pattern on each addressed line. If pattern

addresses are used, the pattern // represents the last pattern address

specified. Any delimiter may be used. Use \ within pattern or

replacement to escape the delimiter. The following flags can be

specified (those marked with a † are specific to GNU sed):

n Replace nth instance of pattern on each addressed line. n is

any number in the range 1 to 512, and the default is 1.

e† If the substitution was made, execute the contents of the

pattern space as a shell command and replaces the pattern

space with the results.

g Replace all instances of pattern on each addressed line, not

just the first instance.

i or I†

Do a case-insensitive regular expression match.

m or M†

Allow ^ and $ to match around ...