3 Ways to List All Installed Packages in RHEL, CentOS and Fedora

One of the several duties of a system administrator is to install and manage software on a computer system-Linux in this case and in order keep track of installed/available software... Read more

3 Useful Hacks Every Linux User Must Know

The world of Linux is filled with so much fun and interesting stuffs, the more we go in, the more we find stuffs. In our efforts to bring those little... Read more

How to Reconfigure Installed Package in Ubuntu and Debian

dpkg-reconfigure is a powerful command line tool used to reconfigure an already installed package. It is one of the several tools offered under dpkg – the core package management system... Read more

How to Mount and Unmount an ISO Image in RHEL/CentOS/Fedora and Ubuntu

An ISO image or .iso (International Organization for Standardization) file is an archive file that contains a disk image called ISO 9660 file system format. Every ISO file have .ISO... Read more

How to Set and Unset Local, User and System Wide Environment Variables in Linux

Environment Variables are some special variables that are defined in shell and are needed by programs while execution. They can be system defined or user defined. System defined variables are... Read more

5 Best Command Line Archive Tools for Linux – Part 1

In our day-to-day life we come across, archived files on the platforms of all kind be it Windows, Mac or Linux. There are several Application program available for all of... Read more

How to Get Domain and IP Address Information Using WHOIS Command

WHOIS is a TCP-based query and response protocol that is commonly used to provide information services to Internet users. It returns information about the registered Domain Names, an IP address... Read more

10 tr Command Examples in Linux

tr (short for translate) is a useful command line utility that translates and/or deletes characters from stdin input, and writes to stdout. It is a useful program for manipulating text... Read more

How to Set or Change System Hostname in Linux

Device or system hostnames are used to easily recognize a machine within a network in a human readable format. It is not much of a surprise, but on Linux system,... Read more

Understanding APT, APT-Cache and Their Frequently Used Commands

If you’ve ever used Debian or a Debian based distribution like Ubuntu or Linux Mint, then chances are that you’ve used the APT package system to install or remove software.... Read more