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 of the most recurring job is changing existing user group. In this tutorial we...
Tagged: root
“-bash: sudo: command not found” Error and Solution For Linux, Debian, CentOS
sudo command is used to execute command as another user. This is generally used to run command as root. In some cases we can get an error like -bash:sudo:command not found which means sudo is not...
Linux Chroot Command Tutorial with Examples
Linux provides different mechanisms for practical and security reasons. chroot is one of them. Processes in linux can access to the file system or root by default. Linux kernel also provides chroot mechanism to restrict access...
Linux Chown Command Tutorial with Examples To Change Ownership Of Files
chown command is used to change file and folders user , group and other ownership. chown is very useful tool but sometimes becomes very dangerous because it can harm current owner policy.chown mainly changes read , write and execute owner...
Linux Sudo Command Tutorial with Examples To Get Root Privileges
Linux sudo command is used to give root privileges to the normal users . /etc/sudoers file is used for configuration of sudo . Sudoers file provides the users who can run sudo command. Sudoers also used to limit the...
Linux User Management
Linux operating system have users to operate applications, services and other stuff. Multiple users can be interact with Linux and we call it multi-user. It may be ridiculous but long time ago operating systems...
How To Download and Install Kali Security and Penetration Test Linux Distribution?
Kali is a Linux distribution or it is a security and penetration test distribution. It is beyond a Linux distribution and provides a lot of useful, popular and featureful tools to the security professionals....
Linux Sshd Server Configuration and Security Options With Examples
Secure Shell or with its most know name SSH is a protocol developed to connect IT systems remotely and securely. SSH works as expected client server architecture. In this post we will look various...
Access.conf Security Configuration For Linux and Unix
access.conf is the configuration file used to logins to the Linux or Unix systems. This file is locate at /etc/security/ path. With this file logins of users, groups, hosts, tty, network are defined to allows or...
Linux Su Command Tutorial With Examples
The su short for substitute user command using to change currently logged user. This makes things practical because the user change made without login. Su command can be used to get root privileges too. Su...
