KSH - Character Replacement

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# 1  
Old 09-24-2007
KSH - Character Replacement

Hey all.

Easy question.

I have a (ksh) varaible x. It contains the following (for example): N557788

I want to replace the "N" with a "-".

I've done this before but for the life of me I cannot remember how I did it.


# 2  
Old 09-24-2007
I had an epiphany! (actually I just remembered what I had done earlier)

This is what I was looking for; nice and simple:

x=`print $4 | sed 's/N/-/'`

With $4 being passed in from another script which is N557788...

# 3  
Old 09-24-2007
You can do it all in shell
(without calling external utilities, like sed for example), but it depends on your ksh version.
Is N in fixed or variable position?
One or many occurrences?

With ksh93(dtksh on Solaris):

$ print ${.sh.version}
Version M 1993-12-28 r
$ v="N557788"
$  print -- ${v/N/-}

For older versions of ksh the solution depends on the answers of the above questions.
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