12.4. Group Summary of sed Commands
In the following tables, 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.
12.4.1. Basic Editing
| Command |
Action |
|
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 tr in Chapter 3, "Linux Commands"). |
12.4.2. Line Information
| Command |
Action |
|
= |
Display line number of a line. |
|
l |
Display control characters in ASCII. |
|
p |
Display the line. |
12.4.3. Input/Output Processing
| Command |
Action |
|
n |
Skip current line and go to line below. |
|
r |
Read another file's contents into the input. |
|
w |
Write input lines to another file. |
|
q |
Quit the sed script (no further output). |
12.4.4. Yanking and Putting
| Command |
Action |
|
h |
Copy pattern space into hold space; wipe out what's there. |
|
H |
Copy pattern space into hold space; append to what's there. |
|
g |
Get the hold space back; wipe out the pattern space. |
|
G |
Get the hold space back; append to pattern space. |
|
x |
Exchange contents of hold space and pattern space. |
12.4.5. Branching Commands
| Command |
Action |
|
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. |
12.4.6. Multiline Input Processing
| Command |
Action |
|
N |
Read another line of input (creates embedded newline). |
|
D |
Delete up to the embedded newline. |
|
P |
Print up to the embedded newline. |
 |  |  | | 12.3. Syntax of sed Commands |  | 12.5. Alphabetical Summary of sed Commands |
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