Here I have tried to list the commands that are useful for us (sys admins) but we still tend to forget. Listed here are a bunch of unix commands.
April 28, 2010
by Mohan Cheema
0 comments
Often Useful often forgotten unix commands
Tag Archives: SED
April 28, 2010
by Mohan Cheema
0 comments
SED One Liners
FILE SPACING
- double space a file
sed G
- double space a file which already has blank lines in it. Output file should contain no more than one blank line between lines of text.
sed '/^$/d;G'
- triple space a file
sed 'G;G'
- undo double-spacing (assumes even-numbered lines are always blank)
sed 'n;d'
- insert a blank line above every line which matches “regex”
sed '/regex/{x;p;x;}'
- insert a blank line below every line which matches “regex”
sed '/regex/G'
- insert a blank line above and below every line which matches “regex”
sed '/regex/{x;p;x;G;}'