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How To Add Existing User To A Group In Ubuntu?

Ubuntu is a popular distributions used by a lot of companies as Desktop and Server. As a system administrator one

sudo command is used to execute command as another user. This is generally used to run command as root. In

Linux provides different mechanisms for practical and security reasons. chroot is one of them. Processes in linux can access to the

chown command is used to change file and folders user , group and other ownership. chown is very useful tool but sometimes

Linux sudo command is used to give root privileges to the normal users . /etc/sudoers file is used for configuration of sudo . Sudoers

Linux operating system have users to operate applications, services and other stuff. Multiple users can be interact with Linux and

Kali is a Linux distribution or it is a security and penetration test distribution. It is beyond a Linux distribution

Secure Shell or with its most know name SSH is a protocol developed to connect IT systems remotely and securely.

access.conf is the configuration file used to logins to the Linux or Unix systems. This file is locate at /etc/security/ path. With

The su short for substitute super user command using to change currently logged user. This makes things practical because the user