Thanks Josef, I was hoping there was a way to avoid the manipulation work. I have never used Python though I have looked at some. I saw 3 .py files and release notes in the download. I saw no readable description of the contents/functionality and more unfamiliar code I didn't want to read. probably easier to do the manipulations than to learn Python. On Thu, Oct 27, 2011 at 12:24 AM, Joseph Sinclair wrote: > well, an IP4 address is just an unsigned int32, and a netmask is just the > number of bits to keep... > you could turn the dotted notation into an int32, then mask off the proper > bits, then translate back to the dotted notation. > > Or you could use Python for the script and use the ip address library in > Python[1] to apply the netmask. > > [1] http://code.google.com/p/ipaddr-py/ > > 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? > > > > > > > > > > --------------------------------------------------- > > PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us > > To subscribe, unsubscribe, or to change your mail settings: > > http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss > > > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us > To subscribe, unsubscribe, or to change your mail settings: > http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss > -- 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