A simple CIDR Network Calculator to help you calculate IPv4 subnet masks. CIDR stands for "Classless Inter-Domain Routing", and represents the preferred method of carving up IPV4 networks for the last 15 years.
This calculator was built from the ground up for trial and error and "what if" usage. It was made assuming you have a "history" command so you can recall the preceding command with the uparrow key and modify the preceding command as needed. So start with the bottom-most IP address you want to cover, and keep adjusting the maskbits figure (the number after the slash), until you cover all the IP addresses you want.
To use this calculator to find a small IP address group containing addresses between 192.168.47.21 and 192.168.47.67, issue the following command:
cidr-calc 192.168.47.21/24
This calculator was deliberately made to be easily used with trial and error, so you can get the range you want to get.
Copyright © 2018 Steve Litt. Released under the Expat License: https://directory.fsf.org/wiki/License:Expat
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Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
Snap is available for CentOS 7.6+, and Red Hat Enterprise Linux 7.6+, from the Extra Packages for Enterprise Linux (EPEL) repository. The EPEL repository can be added to your system with the following command:
sudo yum install epel-release
Snap can now be installed as follows:
sudo yum install snapd
Once installed, the systemd unit that manages the main snap communication socket needs to be enabled:
sudo systemctl enable --now snapd.socket
To enable classic snap support, enter the following to create a symbolic link between /var/lib/snapd/snap and /snap:
sudo ln -s /var/lib/snapd/snap /snap
Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.
To install CIDR Network Calculator, simply use the following command:
sudo snap install cidr-calc
Browse and find snaps from the convenience of your desktop using the snap store snap.
Interested to find out more about snaps? Want to publish your own application? Visit snapcraft.io now.