What Does echo Command Do In Unix?

The Unix operating system provides echo command in order to display some text or string in the terminal. The echo command is generally used to print variables into the terminal. Also, Linux distributions like Debian, Kali, RedHat, Fedora, Ubuntu, etc. support the echo command by default. echo String In Unix We can print some strings … Read more

Echo Command Output To A File In Linux

The echo command is used to print some text into the terminal or console or command line interface. The echo command prints provided text into the standard output which is the current terminal or console or command line interface. But we can use the echo command output in a file in Linux. Write Into File … Read more

How To Force Delete Directory In Linux?

The rmdir command is used to delete directories in Linux. The rmdir command simply removes or deletes an empty directory but does not work with non-empty directories. If we try to remove a non-empty directory in Linux with the rmdir command we get an error like below. Force Delete Directory with rm Command We should … Read more

Automatically Install RPM Dependencies

RPM packages are used to download and install the software in RPM-based Linux distributions like CentOS, RHEL, Fedora, and SUSE. RPM packages only contain the software and metadata about the package but they do not contain the dependencies. Dependencies are required to install and run the software properly. Even the yum and dnf commands automatically … Read more

Delta RPMs disabled because /usr/bin/applydeltarpm not installed” Error and Solution

The RPM package format is used to store software and related metadata for software installation. The Delta RPM is used to transfer only changed parts of the packages in order to save bandwidth and speed up the download of the RPM packages. For example, if there is a very small change in an RPM package … Read more

Install Local RPM with yum Command

The yum command is created to manage, install, update and remove RPM-based packages in an automated way. By default, the yum command uses online repositories to download RPM packages and install them with their dependencies. But the yum command can be also used to install RPM packages locally without the need for the internet. Install … Read more

How To Install RPM with yum Command?

The yum command is a popular command used to manage software in RPM-based distributions. The RPM is a popular package format used to store software and metadata information to install, update and remove. By default, the yum command use local or remote repositories to install and update packages without any need to work with the … Read more

Rpm Uninstall Package Tutorial

The RPM packages are used to manage, install, update, and uninstall different software into Linux distributions. The rpm command can be used to uninstall a package that is already installed into the current Linux distribution. List Installed RPM Packages Before uninstalling the RPM package it can be useful to list existing or installed RPM packages. … Read more

How To Install RPM Files In CentOS?

CentOs is a popular operating system which is based on Red Hat. Like RedHat, CentOS uses the rpm package type in order to manage, install, update, and remove packages in an operating system. We can install RPM files by using different commands like rpm, dnf, or yum in the CentOS distribution. In this tutorial, we … Read more

Extract Substring In Bash

Linux bash is used to run complex commands or scripts to accomplish different tasks. Bash is generally used to work with different types of string and string data. One of the most popular operations is extracting substrings using the bash command line interface. In this tutorial, we examine how to extract substring in bash. Extract … Read more