Most laptops and mobile devices these days have a wireless card. Mobile connectivity is important more than ever. If twenty years ago Linux barely had enough drivers for a handful of on-board ethernet cards, now the wireless drivers embedded in the kernel grows with every kernel release. Further than that, hardware companies release their products together with Linux drivers, be they closed or open-source. In this article we will take a look at how to install wireless drivers in RHEL 8 / CentOS 8.

In this tutorial you will learn:
  • How to install wireless drivers using dnf
  • How to install manually downloaded wireless drivers

Ruby is a very flexible scripting language, it's popularity well-earned by it's power. In this tutorial we will install Ruby on a RHEL 8 / CentOS 8, and write the famous "Hello World" program to test that our installation is working as intended. Note however, that with all languages, Ruby's capabilities are far more than simple text printing on the command line.

In this tutorial you will learn:
  • How to install Ruby with dnf
  • How to get Ruby version information
  • How to write and run the "Hello World" example program in Ruby

Samba provides server and client software to allow file sharing between Linux and Windows machines. Installing and configuring it on RHEL 8 / CentOS 8, is quite easy. Keep reading to learn how to share a directory with samba, and how to apply the appropriate SELinux context to it.

In this tutorial you will learn:
  • How to install samba on RHEL8
  • How to enable and start the smb and nmb daemons
  • How to create a samba share
  • How to setup the firewall to allow samba share to be accessed
  • How to setup the correct SELinux context for samba to work correctly
smbtree-rhel8
Samba shares on RHEL 8 / CentOS 8

On a system with memory-intense workload with common peak loads, a large swap memory can be useful to store large memory contents not needed at the moment. While using swap instead of memory will certainly have great impact on performance, sometimes this is preferable over adding more memory to the machine, as disk space is much cheaper. Sometimes there is simply no more memory, maybe a physical machine that is out of free slots, and there isn't any larger memory modules on the market. At other times the slower performance on peak loads may be preferable over the application crashing with out of memory error.

In some cases swap memory needs to be increased, a live example could be expanding the memory in the machine, and so also expanding the swap space to match the double of the new memory size.

In this tutorial you will learn:
  • How to check swap space.
  • How to identify swap volume.
  • How to extend swap volume.
  • How to add another swap volume.

Webmin is web-based administrator's tool that can manage many aspects of the system. After installation, we can manage our machine's resources, the server applications running on it, set up cronjobs, just to name a few. It comes with it's own http server, no additional container or webserver required. The rich function set is accessible trough a web interface, so all we need is a browser to manage our system remotely.

In this tutorial we will install Webmin on RHEL 8 / CentOS 8, add the necessary service file for easy management, and log in to the WUI (Web User Interface).

In this tutorial you will learn:
  • How to install Webmin from tarball
  • How to add and test systemd service file
  • How to access the web interface

ARE YOU LOOKING FOR A LINUX JOB?
Submit your RESUME, create a JOB ALERT or subscribe to RSS feed on LinuxCareers.com.
LINUX CAREER NEWSLETTER
Subscribe to NEWSLETTER and receive latest news, jobs, career advice and tutorials.
DO YOU NEED ADDITIONAL HELP?
Get extra help by visiting our LINUX FORUM or simply use comments below.