Substitution mid pattern?

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03-28-2012

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Substitution mid pattern?

Hi there,

I have a file that goes like this:

b_cdbc_db_cd_bcd_aaa-bcd_cd

That type of format, for many lines.

What I want to do is enter a new line character for after the _
I write an expression to find "_...-" fine, but I don't know how to substitute this to be:

"_\naaa-" - where \n is the newline inserted, so graphically:
"_
aaa-"

If this is not possible, is it possible to substitute 1 character into a pattern?
My logic would be to reprint the pattern without the _ and simply print a _ before the pattern.

Please do not just give me an answer, I want to learn how to get the answer too :-)

Thanks,
Max.

Last edited by maximus73; 03-28-2012 at 10:43 AM..

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03-28-2012

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Try using sed

Search man pages for sed.

Code:

 
newvar=`echo ${var} | sed 's/\_/\\n/g'`

arun.ijhs.klm

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