>
> JC Janos wrote:
> > Hi,
>
> Hello,
>
> > I have a file containing IP addresses & ranges, their negations, and
> > comments. E.g.,
> >
> > 1.1.1.1 # comment A
> > 2.2.2.2/29 # comment B
> > !3.3.3.3 # comment C
> > !4.4.4.4/28 # comment D
> >
> > I need to extract those IPs & ranges, rearrange them into a
> > comma-separated list, e.g.,
> >
> > 1.1.1.1,2.2.2/29,!3.3.3.3,!4.4.4.4/28
> >
> > I've read that Perl (which I don't know yet at all) is "best" for
Text
> > processing like this.
> >
> > The thing is that I need to do this from within a Bash script, and
> > assign the comma-separated list to a variable in that Bash script.
>
> $ echo $TEST
>
> $ cat yourfile.txt
> 1.1.1.1 # comment A
> 2.2.2.2/29 # comment B
> !3.3.3.3 # comment C
> !4.4.4.4/28 # comment D
> $ TEST=$(perl -lp0777e'$_=join",",/!?[\d.]+(?:\/\d+)?/g'
yourfile.txt);
> echo $TEST
> 1.1.1.1,2.2.2.2/29,!3.3.3.3,!4.4.4.4/28
>
Here is an example of the same thing in shell speak just do whatever
you want with. The ipaddy in the loop to purduce the string you
require.
cat ipin.txt |while read inline
do ipaddy=`echo $inline |awk '{print $1 } '`
echo $ipaddy
done
put this in ipin.txt
1.1.1.1 # comment A
2.2.2.2/29 # comment B
!3.3.3.3 # comment C
!4.4.4.4/28 # comment D
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