On Fri, 2007-12-21 at 09:14 -0700, Ashley M. Kirchner wrote: > Is there a command line tool that can get me from '123.235.126.232' > to '123.232.0.0/14' or even to '123.232.0.0:123.235.255.255'? > > Right now I'm manually using any of ripe.net, lacnic.net, or > arin.net to go from the IP to the range '123.232.0.0:123.235.255.255' > and then using 'netmask' to get to '123.232.0.0/14'. I'm wondering if > there's a single tool to go from one to the other. I'm not sure what you're trying to do. The normal way of doing it is to use ifconfig: # ifconfig eth0 123.235.126.232 netmask 255.252.0.0 That's a /14 netmask. ipcalc can show it to you: # ipcalc -m 123.235.126.232/14 NETMASK=255.252.0.0 ---------------------------------------------------------------------- - Rick Stevens, Principal Engineer rstevens@xxxxxxxxxxxx - - CDN Systems, Internap, Inc. http://www.internap.com - - - - There are only 10 kinds of people in the world -- those who - - understand binary and those who don't - ----------------------------------------------------------------------