nixCraft - Linux and Unix tutorials for new and seasoned sysadmin

Unix Basics Quiz

last updated March 22, 2020 in UNIX

Let us test your basic knowledge of Unix systems, including commands.

Ansible zypper update all packages on OpenSUSE/SUSE

last updated March 20, 2020 in Suse

I got a cluster of servers powered by OpenSUSE / SUSE Enterprise Linux. How can I update all of them using the zypper module of Ansible? How can I use Ansible for system updates and reboot the server when kernel upgrades took place on SUSE/OpenSUSE?

CentOS 8 set up WireGuard VPN server

last updated March 13, 2020 in CentOS, Cryptography, Linux

How do I install and set up WireGuard VPN server on a CentOS 8 Linux? How can I configure CentOS 8 as the WireGuard VPN server?

CentOS 8 Set Up OpenVPN Server In 5 Minutes

last updated March 12, 2020 in CentOS, Cryptography, Linux, OpenVPN

How do I set up an OpenVPN Server on CentOS 8 Linux server to shield my browsing activity from bad guys on public Wi-Fi, and more?

Linux Trivia: Did you know what Linus wanted to call his kernel initially?

last updated March 11, 2020 in Linux

Linux Trivia: Linux very nearly wasn’t called Linux. Did you know what Linus wanted to call his kernel initially?

1. Free Unix
2. Freax
3. LinusOS
4. TuxOS

Think you know the answer?

Linux Quiz

last updated March 10, 2020 in BASH Shell, Linux, UNIX

Let us test your basic knowledge of Linux systems, including commands.

How to enable firewalld logging for denied packets on Linux

last updated March 2, 2020 in CentOS, Fedora Linux, Iptables, Linux, RedHat and Friends, Suse

How do I enable firewalld logging for denied packets on Linux operating systems so that I can view all dropped packets information? How can I view a log of the traffic blocked by FirewallD under a CentOS/RHEL (Red Hat Enterprise Linux)/Suse/OpenSUSE Linux?