Sed

Stream Editor

Tutorials

• Sed - An Introduction and Tutorial by Bruce Barnett

HOWTO

Back references without escaping parenthesis

sed 's/foo (bar)/\1/g'

FAQ

+ or *

*

matches 0 or more

+

matches 1 or more

errror messages

sed: -e expression #1, char 32: unknown command: `\'

try

's/...

instead of

'/...

Replace with newline

^V^M

Replace literal \n with actual newline

sed 's/\\n/\n/g'

match whitespace

\s

replace newline

try tr instead:

tr -d '\n' < file

Edit in-place

sed -i

match number

sed 's/.*\([0-9]\+\).*/\1/'

or

sed -r 's/.*([0-9]+).*/\1/'

Split words

sed -r 's/([^ ]+) +([^ ]+) +([^ ]+) +([^ ]+) +([^ ]+) +([^ ]+) +([^ ]+).*/\4/g'