Howtos | 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 …

Howtos / Linux / Linux Administration / Linux Basic / Linux Commands

How to Kill user sessions in Linux

July 28, 2020February 17, 2021 - by Magesh Maruthamuthu - Leave a Comment

Sometimes we might need to kill a user session in Linux based on requests, which can be done by sending SIGNALS with kill command. We need to send one of …

Howtos / Linux / Linux Administration / Linux Basic / Linux Commands / User Management

How to become a ‘root user’ in Linux?

July 21, 2020January 25, 2021 - by Magesh Maruthamuthu - Leave a Comment

root user is a privileged user in Linux, which is similar to an administrator in Windows. All kind of administrative operations can be performed using root user privilege hence it …

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 …

Hard Link / Howtos / Linux / Linux Commands / Soft Link / Symbolic Link

Difference between Soft link vs Hard link

May 28, 2020January 26, 2021 - by Magesh Maruthamuthu - Leave a Comment

Link is a mechanism of creating a shortcut to the original file or directory which contains information about its files or directories. What is Soft link? A symbolic link, also …

Howtos / Linux / Linux Administration / Linux Advanced Commands / Linux Commands

How to Remove files older than ‘N’ days using Tmpwatch/Tmpreaper on Linux

May 20, 2020January 11, 2021 - by Magesh Maruthamuthu - Leave a Comment

You may have missed to delete some files that are no longer needed on your computer in some directory. It could be either in “Download” or any other directory that …

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 …

Howtos / Linux Commands / linux-tutorials

How to display Asterisks(*) when you type Password in Linux Terminal

July 31, 2019September 4, 2019 - by Magesh Maruthamuthu - 1 Comment

As we all know terminal is a crucial tool for Linux admin, which allow them to perform any kind of task in a secured manner. When you type password in …

Howtos / Linux / Linux Commands / Package Management

How to Install & Uninstall a list of Packages from a file

April 29, 2019August 1, 2021 - by Magesh Maruthamuthu - Leave a Comment

In some case you may need to install a list of packages from one server to another. For example, you have installed 15 packages on Server-A, and those packages needs …