User is an entity which has the right to use some resources, applications, equipment, process or system. Operating systems and applications generally have users to authorize and authenticate their actions. Also, users are used to...
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 will...
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 installed....
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 to...
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 according...
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 commands...
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 was...
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. Some...
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 security...
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 disallowed...
