How to Identify and Kill Zombie Processes in Linux
Zombie processes may sound spooky, but they are a real issue that can affect the performance and … Read more
System Administration, Security
Managing Users on Ubuntu: How to Add and Delete Users
User management is a fundamental task for any Ubuntu system administrator. Whether you’re setting up new accounts … Read more
How to Create a Bootable USB Pen Drive for Installing Ubuntu ?
Creating a bootable USB pen drive is a crucial step for installing Ubuntu on your computer. This … Read more
How to Install Apache Tomcat on Ubuntu: Step-by-Step Guide
Apache Tomcat is an open-source implementation of the Java Servlet, JavaServer Pages, Java Expression Language, and Java … Read more
How to Send Email from Linux Command Line using SSMTP (Ubuntu, Gmail, AWS) ?
Sending emails from the command line is a handy skill for system administrators and developers. SSMTP (Simple … Read more
How to create SSH Keys in Ubuntu / Linux ?
SSH (Secure Shell) keys are a secure and convenient way to authenticate to remote servers without the … Read more
ssh-add – Could not open a connection to your authentication agent
When working with gitlab, to push our source code server we need to add the SSH key … Read more
What is my Public IP Address ?
Every machine which is connected to internet gets assigned with one unique IP address till it remains … Read more
How to Check IP Address, Network Interface details in Linux ?
If you want to know the IP address and currently active network interfaces on Linux, we need … Read more
Solved: “is not in the sudoers file. This incident will be reported”
When we created a new user using “adduser” command, by default the user doesn’t have sudo (admin) … Read more