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How to change field seperator

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# 1  
Old 05-11-2007
How to change field seperator
Hi Please help me out with this problem:

I want to have a script that would change the nth field seperator in a line into something else.


like
a,d,4,2,97,8,9
into
a,d,4,2,97/8/9

Thanks
Last edited by onthetopo; 05-11-2007 at 10:52 AM..
# 2  
Old 05-11-2007
Would this work for you:
The following changes the 5th occurence:
Code:
sed 's=,=/=5' input_file

# 3  
Old 05-11-2007
Hi.

Apparently there is some variation in how versions handle the flags at the end of a substitution:
Quote:
info sed:

`NUMBER'
Only replace the NUMBERth match of the REGEXP.

Note: the POSIX standard does not specify what should happen when
you mix the `g' and NUMBER modifiers, and currently there is no
widely agreed upon meaning across `sed' implementations. For GNU
`sed', the interaction is defined to be: ignore matches before the
NUMBERth, and then match and replace all matches from the NUMBERth
on.
cheers, drl
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