netmask in a script

[Dazed_75]

Yep, I just finished playing with it.  My result I will put in the script
should be:

RANGE=`ipcalc $MYIP $MYMASK | grep Network | cut -d' ' -f 4 | cut -d/ -f 1`



On Thu, Oct 27, 2011 at 11:13 AM, Eric Shubert <ejs at shubes.net> wrote:

> Brian's ipcalc looks like it might simplify things a bit. Nice.
>
>
> On 10/27/2011 10:57 AM, Dazed_75 wrote:
>
>> Thanks Eric.  Those are what I was going to use before I had the thought
>> that someone might know of an already built function I could use rather
>> than me taking the IP and netmask apart, applying those, and
>> reassembling the IPrange.  I suppose I've already wasted more time than
>> I would have saved.  :)
>>
>> On Thu, Oct 27, 2011 at 10:28 AM, Eric Shubert <ejs at shubes.net
>> <mailto:ejs at shubes.net>> wrote:
>>
>>    On 10/26/2011 09:49 PM, Dazed_75 wrote:
>>
>>        I would like to apply a netmask to an arbitrary IP in a
>>        bash/dash script
>>        (e.g. apply 255.255.255.0 to 173.10.3.155 to get 173.10.3.0).
>>          Is there
>>        any easy way to do that without taking the IP apart, doing 4
>>        operations
>>        and reassembling the results?
>>
>>        --
>>        Dazed_75 a.k.a. Larry
>>
>>        The spirit of resistance to government is so valuable on certain
>>        occasions, that I wish it always to be kept alive.
>>           - Thomas Jefferson
>>
>>
>>    http://tldp.org/LDP/abs/html/_**_ops.html<http://tldp.org/LDP/abs/html/__ops.html>
>>
>>    <http://tldp.org/LDP/abs/html/**ops.html<http://tldp.org/LDP/abs/html/ops.html>
>> >
>>    See "bitwise operators" about half way down the page. I think that's
>>    what you're looking for.
>>
>>    --
>>    -Eric 'shubes'
>>
>>
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>>
>>
>>
>>
>> --
>> Dazed_75 a.k.a. Larry
>>
>> The spirit of resistance to government is so valuable on certain
>> occasions, that I wish it always to be kept alive.
>>   - Thomas Jefferson
>>
>>
>
> --
> -Eric 'shubes'
>
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-- 
Dazed_75 a.k.a. Larry

The spirit of resistance to government is so valuable on certain occasions,
that I wish it always to be kept alive.
  - Thomas Jefferson
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