Practical UNIX

sed

Stream editor

Usage: sed cmd [list-of-files]

Standard Input: Used only if no list-of-files is given

Standard Output: Used to display results

SEE ALSO

For more information, see page 526

Useful sed commands:

q means quit.

s means substitute.

Using sed from the command line to replace strings in output:

sed 's/R.E./repl/g' [list-of-files] sed 's:R.E.:repl:g' [list-of-files] # can change delimiter sed '5,23 s/R.E./repl/g'[list-of-files] only change lines 5 thru 23, $ means end of line sed '/acme/ s/R.E./repl/g' [list-of-files] only change lines that contain acme sed '/s1/,/s2/ s/R.E./repl/g' [list-of-files] only changes lines from first occurrence ...