Unix Shell - Re: SED question: entering a blank line above a character searched

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Re: SED question: entering a blank line above a character searched

Ed Morton

2007-12-28, 1:26 pm

On 12/28/2007 1:01 AM, Kompu Kid wrote:
> Hello All:
>
> After finding a ":", I would like to enter a blank line above the line
> that the colon is found.
>
> How do I do this with SED?

Appologies if there's some reason you NEED to use sed, but often people request
a solution with one tool because they don't know the alternatives. In this case:

awk '/:/{print ""}1' file

In general sed should only be used for simple substitutions.

Ed.