If your daily tasks include managing servers and the data center's network, the following Linux utilities and commands—from basic to advanced—will help make network management easier.
In several of these commands, you'll see
<fqdn>, which stands for "fully qualified domain name." When you see this, substitute your website URL or your server (e.g.,
server-name.company.com), as the case may be.
Read more about networking for sysadmins.