CentOS | 2DayGeek

How to Convert Text Files between Unix and DOS (Windows) Formats

August 18, 2020August 18, 2020 - by Magesh Maruthamuthu - 1 Comment

As a Linux administrator, you may have noticed some requests from developers to convert files from DOS format to Unix format, and vice versa. This is because these files were …

Arch Linux / CentOS / Debian / fedora / Howtos / Linux / Linux Advanced Commands / Linux Commands / Linux Mint / Linux-Distributions / linux-tutorials / opensuse / Oracle Linux / Red Hat / Red Hat Enterprise Linux / RHEL / ubuntu

How to Mount and Unmount File System in Linux

July 7, 2020June 29, 2023 - by Magesh Maruthamuthu - Leave a Comment

Generally, a file system must be mounted on a Linux system to access the contents. When adding a new disk to your system, you may need to use the fdisk …

Arch Linux / CentOS / database / Debian / fedora / Howtos / Linux / Linux Advanced Commands / Linux Commands / Linux Mint / Linux-Distributions / linux-tutorials / MariaDB-Tutorials / MySQL-Tutorials / opensuse / Oracle Linux / Red Hat / Red Hat Enterprise Linux / RHEL / ubuntu / uptime

Three Methods to Check Uptime of MySQL/MariaDB Database Server on Linux

May 5, 2020May 5, 2020 - by Magesh Maruthamuthu - Leave a Comment

We all know the purpose of the uptime command in Linux. This is used to check the uptime of the Linux system and how long the system runs without restarting. …

CentOS / FAQ / Howtos / Linux Troubleshooting / Oracle Linux / RHEL

How to Boot into Single User Mode in CentOS/RHEL 7/8

April 29, 2020June 2, 2021 - by Magesh Maruthamuthu - 2 Comments.

Single user mode, also referred to as maintenance mode, allows a single super user to recover/repair the system problems. Generally, these problems cannot be solved in a multi-user environment. The …

CentOS / fedora / Linux Commands / Package Management / Red Hat

Difference Between YUM and RPM

April 22, 2020May 23, 2021 - by Magesh Maruthamuthu - 2 Comments.

Package manager or package management system is a collection of software tools that automate the process of installing, upgrading, configuring, and removing software in the Linux system. Each Linux distribution uses …

Apps / Arch Linux / CentOS / Code Editor / Debian / fedora / Linux / Linux Advanced Commands / Linux Commands / Linux Mint / opensuse / Oracle Linux / Red Hat / Red Hat Enterprise Linux / RHEL / ubuntu

Basic Vim Commands You Need to Know to Work in Vim Editor

February 17, 2020February 17, 2020 - by Magesh Maruthamuthu - Leave a Comment

If you are a system administrator or developer, you may need to edit a file while working on the Linux terminal. There are several file editors on Linux, and how …

CentOS / Linux / Linux Advanced Commands / Linux Commands / php 7 / Red Hat / Red Hat Enterprise Linux / RHEL

3 Methods to Install the Latest PHP 7 Package on CentOS/RHEL 7 and CentOS/RHEL 6

January 17, 2020January 17, 2020 - by Magesh Maruthamuthu - 1 Comment

PHP is the most popular open-source general-purpose scripting language and is widely used for web development. It’s part of the LAMP stack application suite and is used to create dynamic …

Arch Linux / CentOS / Debian / fedora / Linux / Linux Advanced Commands / Linux Commands / Linux Mint / opensuse / Red Hat / Red Hat Enterprise Linux / RHEL

8 Commands to Check Memory Usage on Linux

December 24, 2019December 24, 2019 - by Magesh Maruthamuthu - Leave a Comment

Linux is not like Windows and you will not get a GUI always, especially in a server environment. As a Linux administrator, it is important to know how to check …

CentOS / Package Management / Red Hat

Three ways to exclude a specific package from yum update

August 28, 2019August 1, 2021 - by Magesh Maruthamuthu - Leave a Comment

As part of system update, you may need to exclude few of the packages due to application dependency in Red Hat based system. If so, how to exclude and what …

Arch Linux / CentOS / Debian / fedora / Linux / Linux Advanced Commands / Linux Commands / Linux Mint / Linux-Distributions / linux-tutorials / opensuse / Oracle Linux / Red Hat / Red Hat Enterprise Linux / RHEL / ubuntu

How to Change HostName in Linux

February 14, 2019March 16, 2020 - by Magesh Maruthamuthu - Leave a Comment

You generally set the hostname when installing the operating system. By default the system takes the server’s default name as the hostname. This will be localhost.localdomain. any name as the …