- Details
- Lubos Rendek
- Redhat / CentOS
In this tutorial you will learn:
- How to install NTP server on RHEL 8 / CentOS 8.
- How to install NTP client on RHEL 8 / CentOS 8.
- How to open firewall to incoming NTP requests.
- How to configure Chrony as NTP server.
- How to configure Chrony as NTP client.
- Details
- Lubos Rendek
- Redhat / CentOS
wget network downloader utility is an invaluable tool for any system or network administrator. The wget utility can be installed with a single dnf command in case it is currently unavailable on your RHEL 8 / CentOS Linux system.
In this tutorial you will learn:
- How to install the
wgetcommand on Redhat 8. - What is the
wgetcommand basic usage.
- Details
- Lubos Rendek
- Redhat / CentOS
dnf command.
In this tutorial you will learn:
- How to install PuTTY on RHEL 8 / CentOS 8 using the dnf command.
- How to launch PuTTY.
- Details
- Lubos Rendek
- Redhat / CentOS
vim text editor utility is an invaluable tool for any system administrator. The vim editor can be installed with a single dnf command in case it is currently unavailable on your RHEL 8 / CentOS 8 Linux system.
In this tutorial you will learn:
- How to install vim text editor on RHEL 8 / CentOS 8.
- How to set vim as the system wide default text editor.
- How to set vim as the user default text editor.
- Details
- Lubos Rendek
- Redhat / CentOS
In this tutorial you will learn:
- How to install GUI on RHEL 8 / CentOS 8
- How to start GUI on RHEL 8 / CentOS 8
- Details
- Lubos Rendek
- Redhat / CentOS
dnf install command.
In this tutorial you will learn:
- How to install NPM on Rhel 8.
- How to search for modules using NPM.
- How to install modules using NPM.
- How to install modules form a Git repository.
- Details
- Egidio Docile
- Redhat / CentOS
The latest release of the RHEL 8 / CentOS 8. Red Hat has built its own tools,
buildah and podman, which aim to be compatible with
existing docker images and work without relying on a daemon, allowing the
creation of containers as normal users, without the need of special permissions
(with some limitations: e.g. at the moment of writing, it's still not
possible to map host ports to the container without privileges).
Some specific
tools, however, are still missing: an equivalent of
docker-compose, for example does not exists yet. In this tutorial
we will see how to install and run the original Docker CE on Rhel8 by using the
official Docker repository for CentOS7.
- How to enable the docker-ce repository on RHEL 8 / CentOS 8
- How to install docker and docker-compose on RHEL 8 / CentOS 8
- Details
- Lubos Rendek
- Redhat / CentOS
In this tutorial you will learn:
- How to install all LAMP prerequisite packages on RHEL 8 / CentOS 8.
- How to secure MariaDB database.
- How to start httpd and MariaDB services.
- How to open HTTP and HTTPS firewall ports.
- Details
- Răzvan T. Coloja
- Redhat / CentOS
.sh form or .bin form. Both are executable installers that you can launch in RHEL 8. If you have downloaded a .bin file and don't know how to run it follow these steps.
In this tutorial you will learn:
- How to make .bin files executable using the command line
- How to install .bin files in RHEL 8
- Details
- Lubos Rendek
- Redhat / CentOS
dig DNS lookup utility is an invaluable tool for any system or network administrator. The dig utility can be installed with a single dnf command in case it is currently unavailable on your RHEL 8 / CentOS 8 Linux system.
In this tutorial you will learn:
- How to install the
digcommand on Redhat 8. - What is the
digcommand basic usage.
- Details
- Răzvan T. Coloja
- Redhat / CentOS
There may come a time when that package you want to install in RHEL 8 / CentOS 8 is simply not available as a RPM file. The alternative is to download the source and compile it yourself, or - alternatively - generate a RPM file from that source code later on.
But there is another way. Given the fact that Debian-based distributions have way more users than RPM-based ones, the number of available packages in their repositories is greater. Chances are you will be able to find a DEB file for that package you want. Here is how to install that DEB file in RedHat Linux with the help of a small utility called alien.
- How to install alien in RHEL 8 / CentOS 8
- How to convert a DEB package to a RPM one
- Details
- Răzvan T. Coloja
- Redhat / CentOS
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
- Details
- admin
- Redhat / CentOS
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
- Details
- Egidio Docile
- Redhat / CentOS
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
- Details
- admin
- Redhat / CentOS
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.
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