root – POFTUT

What Is User In Computing, Windows, Linux, Google?

What Is User In Computing, Windows, Linux, Google?

User is an entity that 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 storing data personally in a private area like Home or Users. Linux Users Linux is an operating system and it … Read more

What Is Sudo Command in Linux?

sudo or superuser do is a utility used on Linux, BSD, and Unix systems that provides the running command with root or Administrator privileges. Not every user needs to have root privileges but in some cases needs to run commands with root privileges. We can use sudo to run some specific or all provided commands … Read more

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 will look how to accomplish this task and some helper commands about this. Primary Group Primary group specifies the user first … Read more

“-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 installed. In this tutorial we will look different ways and distributions to solve this problem. Install Sudo For Debian, Ubuntu, Mint, … Read more

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 to the whole filesystem in Linux. Syntax The chroot syntax is like below. chroot OPTION NEWROOT COMMAND OPTION is chroot option NEWROOT is … Read more

Linux Chown Command Tutorial

Linux Chown Command Tutorial

chown command is used to change file and folders user, group, and other ownership. chown is a very useful tool but sometimes becomes very dangerous because it can harm the current owner’s policy.chown mainly changes read, write, and execute the owner according to the given user or group. chown Command Syntax Syntax of chown is like below. List User and Group … Read more

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 commands the user can run. Run Command With Sudo Sudo command will accept given command and look to the sudoers file. … Read more

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 was single user. Which means to work on a system other users should sign out. Now in our era we have … Read more

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. Some of popular tools Kali provides nmap metasploit burp sqlmap masscan nikto … Download Kali We should get Kali installation iso … Read more

Linux SSH Server (sshd) 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 at various security-related configuration options of the SSH daemon service or sshd. The tutorial about the client-side ssh configuration can be found in the … Read more