SED question: Inserting a blank line

[Database Administrator]

I have a SED file that replaces a bunch of stuff. In one line I am
trying to add a blank line in the target text file after the
following word at the beginning of a line:

"BY"


My expression is as follows:


s/^BY*$/BY*$\
/

When I run SED on the target text file I get the following error
message:


sed: 42: scripts/ppsedf: unterminated regular expression

(my_sed executable file calls the my_sedf).


What should I do?


If it matters, I am on a system using Open BSD.


Thanks,


Deguza

[Database Administrator]

At 2008-11-12 12:53PM, "Kompu Kid" wrote:
> I have a SED file that replaces a bunch of stuff. In one line I am
> trying to add a blank line in the target text file after the
> following word at the beginning of a line:
>
> "BY"

Instead of search and replace, try triggering an action when that
pattern is seen:

printf "%s\n" A B BY C D | sed '/^BY/a
'

Or, using awk:

printf "%s\n" A B BY C D | awk '1{print}/^BY/{print ""}'



--
Glenn Jackman
Write a wise saying and your name will live forever. -- Anonymous

[Database Administrator]

2008-11-12, 18:23(+00), Glenn Jackman:
> At 2008-11-12 12:53PM, "Kompu Kid" wrote:
>> I have a SED file that replaces a bunch of stuff. In one line I am
>> trying to add a blank line in the target text file after the
>> following word at the beginning of a line:
>>
>> "BY"
>
> Instead of search and replace, try triggering an action when that
> pattern is seen:
>
> printf "%s\n" A B BY C D | sed '/^BY/a
> '
[...]

or ... | sed '/^BY/G'


--
Stéphane

[Database Administrator]

On Nov 12, 9:53*am, Kompu Kid wrote:
> I have a SED file that replaces a bunch of stuff. In one line I am
> trying to add a blank line in the target text file after the
> following word at the beginning of a line:
>
> "BY"
>
> My expression is as follows:
>
> s/^BY*$/BY*$\
> /
>
> When I run SED on the target text file I get the following error
> message:
>
> sed: 42: scripts/ppsedf: unterminated regular expression
>
> (my_sed executable file calls the my_sedf).
>
> What should I do?
>
> If it matters, I am on a system using Open BSD.
>
> Thanks,
>
> Deguza

Thanks for all those who answered. I inserted

/^BY/G

into my my_sedf file and it seems to do the trick.

Deguza