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10.4 Group Summary of sed Commands

In the lists below, the sed commands are grouped by function and are described tersely. Full descriptions, including syntax and examples, can be found afterward in the "Alphabetical Summary" section.

10.4.1 Basic Editing

a\ Append text after a line.
c\ Replace text (usually a text block).
i\ Insert text before a line.
d Delete lines.
s Make substitutions.
y Translate characters (like Unix tr ).

10.4.2 Line Information

= Display line number of a line.
l Display control characters in ASCII.
p Display the line.

10.4.3 Input/Output Processing

n Skip current line and go to line below.
r Read another file's contents into the output stream.
w Write input lines to another file.
q Quit the sed script (no further output).

10.4.4 Yanking and Putting

h Copy into hold space; wipe out what's there.
H Copy into hold space; append to what's there.
g Get the hold space back; wipe out the destination line.
G Get the hold space back; append to the pattern space.
x Exchange contents of hold space and pattern space.

10.4.5 Branching Commands

b Branch to label or to end of script.
t Same as b , but branch only after substitution.
: label Label branched to by t or b .

10.4.6 Multiline Input Processing

N Read another line of input (creates embedded newline).
D Delete up to the embedded newline.
P Print up to the embedded newline.

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