How to Run Shell Scripts with Sudo Command in Linux
sudo is a powerful command line tool that enables a “permitted user” to run a command as another user (the
Understanding Shared Libraries in Linux
In programming, a library is an assortment of pre-compiled pieces of code that can be reused in a program. Libraries
The Linux Lifetime Mastery Bundle Course
Computer programming has become one of the most in-demand skills for IT professionals. But it all starts with a basic
Initial Server Setup with Ubuntu 20.04 / 18.04 and 16.04
This tutorial will guide you on the first basic steps you need to configure on a new installed Ubuntu server
How to Enable, Disable and Install Yum Plug-ins
YUM plug-ins are small programs that extend and improve the overall performance of the package manager. A few of them
Initial Server Setup and Configurations on RHEL 7
In this tutorial we’ll discuss the first configuration steps you need to take care of after a fresh installation of
How to Fix “firewall-cmd: command not found” Error in RHEL/CentOS 7
firewall-cmd is a command line front-end for firewalld (firewalld daemon), a dynamic firewall management tool with D-Bus interface. It supports
How To Protect Hard and Symbolic Links in CentOS/RHEL 7
In Linux, hard and soft links are referenced to files, which are very important, if not protected very well, any
10 Strace Commands for Troubleshooting and Debugging Linux Processes
strace is a powerful command line tool for debugging and trouble shooting programs in Unix-like operating systems such as Linux.
How to Create Hard and Symbolic Links in Linux
In Unix-like operating systems such as Linux, “everything is a file” and a file is fundamentally a link to an
How to Recover or Rescue Corrupted Grub Boot Loader in CentOS 7
In this tutorial we’ll cover the process of rescuing a corrupted boot loader in CentOS 7 or Red Hat Enterprise
Install a Complete Mail Server with Postfix and Webmail in Debian 9
This tutorial will guide you on how to install and configure a complete mail server with Postfix in Debian 9