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NTP is a core protocol used by most IT infrastructures. Its purpose is to synchronize date and time information. However, it is very important to configure NTP for your servers, clients, and other network devices. NTP uses a UDP port number...

If you are using Linux and are looking for a tool that can monitor all the processes running on your system, then you should use the command ps aux. This command will show you an overview of all running processes. It is very useful for trou...

In this article, we will learn how to fix the error mesg: ttyname failed: Inappropriate ioctl for device in Linux . We will discuss some of the causes of this error and show you how to fix it. Let's start with what causes this error in Linu...

In this article, we will learn how to execute binary files in Linux. We will also learn how to troubleshoot the error if Linux fails to execute the binary file. Usually, this error occurs when we run shell scripts in Linux. This article wil...

In this Linux article, we will learn about lsof command in Linux operating system. We will see how to use this command for different purposes in Linux. We use lsof the lsof command to verify the ports in use on the Linux operating system. U...

In this Linux article, we will learn how to install .deb (Debian Package) files on Linux systems. We will also see how to remove .deb files after installation. More importantly, we will learn different ways to install .deb files on Linux sy...

This article will teach us how to update YUM in Linux and how to install, update, remove, find and manage packages on a Linux system. We have also seen the difference yum update between and in Linux yum upgrade . yum update command in Linux...

This short article is a brief introduction to CentOS followed by a brief discussion on how we can get the server IP address in CentOS using the Command Line Interface (CLI). This article will discuss some of the commands and their usage for...

If present, the working directory of a process in Compute is a directory in a linked hierarchical file system that is dynamic for each process. In Docker, we can set our working directory by editing the Dockerfile and adding the key WORKDIR...

Docker allows developers to efficiently build, test, and deploy applications by packaging them in standardized units called containers. When working with Docker containers, you may encounter scenarios where you need to connect a container t...

This article explains how we can write a batch script to loop through files in subdirectories. We will take an example to explain the concept. Batch file to loop through files in subdirectories Assume we have the directory structure shown b...

This article describes methods for copying files between different hosts on a network. It also explores the scp command and how to use it to copy files from a remote location. scp command Secure Copy Protocol (SCP) is a secure copy network...

This article explores regular expressions, their basic syntax, and how to run them in Bash using case and if-else constructs. Introduction to Regular Expressions A regular expression, also called regex or regexp, is a sequence of characters...

In this article, we will learn how to change directories in Bash. The term directory is used to refer to a folder. Because you frequently move between folders when using Bash and when using the Git version control system, it is essential to...

Finding a directory is very easy through Bash scripting. But finding the exact directory folder name you are in right now is a bit complicated. This article will introduce three methods to find the folder name from this article directory. I...