How To Add A User To A Group?

How can I add a user to the existing group ? In linux users may have different groups registered. By default adding a user to the...

How To Delete Remove User Accounts?

How can I remove a linux user account from linux system. As you know user management in linux requires root privileges. While removing user his...

How To Add New User Account To Linux

Linux all operations are done with users. In Linux environment to create a file,  start a service, open a network port we need a user with...

How To Disable or Enable Selinux?

I have fedora desktop. I want to run some services but I get error about selinux. How can I disable selinux? Selinux is a security...

How To Check Java Version

Java is very popular programming language between open source community. Java is used for a lot of opensource projects. To run java applications it Java...

Fork Bomb

Our aim is to create a lot of process with single and simple commands.Soe every created process will eat some ram and cpu. If we...