In CentOS 7 we can use the systemctl command to select which mode the OS boots into. If you have a GUI like Gnome or KDE installed, it’s easy to boot directly into your preferred environment. To find...
Learn MoreThere are two funky commands that can help us see who’s currently logged in, and what operations were performed last. Those two commands are who and last. Let me show you how to use them. The who...
Learn MoreCentOS 7 has a nice command called hostnamectl. With it we can display the current hostname, and set any of the three types of hostname: static hostname (something like example.com) transient hostname...
Learn MoreEver wondered if there’s a difference in overhead and memory usage when you’re using a VM instead of OS X directly? Here’s a comparison for website hosting. The above graph shows the...
Learn MoreHere’s how to do it: firewall-cmd --zone=internal --add-service=ssh --permanent firewall-cmd --zone=internal --add-source=1.2.3.4/32 --permanent firewall-cmd --zone=internal --add-source=5.6.7.8/32...
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