One of the most handy utilities I\’ve used for a long time is ipcalc. It basically gives you all sorts of information on IP addressing, subnets, etc. The output looks like this:
| ipcalculator output |
It seems the RedHat engineers have a bit of their own mind and so they come up with a different version which doesn\’t resemble anything at all on the above picture but looks like this but uses the same name:
| ipcalc output |
So in case you still want the above do a \”yum install ipcalculator\” and add an ipc alias for abbreviation in your .bashrc file.
ipc x.x.x.x/xx give then the above shown output.
Cheers,
Erwin