Shell scripting kungfu

fbsdq at peterk.org fbsdq at peterk.org
Fri Jan 18 09:32:02 PST 2008


> I need to do the following:
>
> Take a list of various strings, one of which is a quoted IP address, and
> extract the IPs.  (Done that.)
>
> Then take the list of IPs and convert them to a list of IPs with masks on
> a
> single line.
>
> IOW, I have converted the original list to this:
>
> x.x.x.x
> x.x.x.x
> x.x.x.x
> x.x.x.x
>
> Now I need to remove the newlines and add /32, to the end of each IP so
> that I
> have this:
> x.x.x.x/32,x.x.x.x/32,x.x.x.x/32,etc.
>
> I got close with sed, but I'm not quite there.
>
> I got this:
>
> x.x.x.x/32,x.x.x.x
> x.x.x.x/32,x.x.x.x
> x.x.x.x/32,x.x.x.x
>
> Here's the code I used:
> cat hostlist | cut -d',' -f2 | cut -d'"' -f2 | sort | uniq | grep -v
> "inet" |
> sed '/[^*]$/N;s/\n */\/32,/'
>
> What am I missing?
 you are missing 'tr' I guess;

chernogorsk:#cat /tmp/x
x.x.x.x
x.x.x.x
x.x.x.x
x.x.x.x
chernogorsk:#cat /tmp/x | sed 's/$/\/32,/g'|tr -d "\r\n" > /tmp/x2; echo
>> /tmp/x2
chernogorsk:#cat /tmp/x2
x.x.x.x/32,x.x.x.x/32,x.x.x.x/32,x.x.x.x/32,

some fine tunning and getting rid of the trailing ',' you can add another
sed pipe, etc.etc.

]Peter[


>

>

>
> --
> Paul Schmehl (pauls at utdallas.edu)
> Senior Information Security Analyst
> The University of Texas at Dallas
> http://www.utdallas.edu/ir/security/
>
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