[Ilugc] sed - explanation required
- From: gopal@xxxxxxxxxxxxxxxxx (Gopalarathnam Venkatesan)
- Date: Thu Aug 17 13:00:23 2006
Ashok Antony wrote:
hi all,
# insert a blank line above every line which matches "regex"
sed '/regex/{x;p;x;}'
what is the use of 'x' and 'p' there. could any one explain me better ?
Read sed(1).
- p is for printing the output, used in conjunction with -n command line
option.
- x is for swapping pattern and hold space.
--
Gopalarathnam Venkatesan
http://gopalarathnam.com/
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