Here we’ll show you how to add your Linux system to a Microsoft Windows Active Directory (AD) domain through the command line. This will allow us to SSH into the Linux server with user accounts in our AD domain, providing a central source of cross-platform authentication.
Dig (domain information groper) is a tool that is used for querying DNS servers for various DNS records, making it very useful for troubleshooting DNS problems.
By the end of this guide you will know how to use dig to perform different types of DNS lookups in Linux.
The ‘ip’ command is used to print out various network information in Linux. It replaces the deprecated ‘ifconfig’ command, which is not even installed by default in CentOS 7.
The ip command is part of the iproute package, which is installed by default in most modern Linux distributions.
In the examples here you’ll see how to use the ip command to show network configuration such as link information, IP addresses and routing.
The ‘df’ command is used to quickly print an overview of the disk space in use on different partitions and file systems.
df comes from the GNU Coreutils package and should be available by default in Unix/Linux based operating systems.