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...
Linux uses groups in order to share resources in a easy way. In general a resource will have a user, group and other access rights. In this tutorial we will learn how to add user...
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...
chmod is very useful tool to manage file modes like read write execute. One of the most used option for chmod is +x which stands for execution rights. In this tutorial we will look different use cases...
Linux users can be added with different ways. but one of the most used way is adding them throughout the shell because Linux admins loves shell usage. In this tutorial we will look how to...
passwd command is used to change password and provides information about Linux accounts. Normal or root user can change passwords. Normal user can only change his own password in the other hand root can change all users passwords....
I have a lot of users in my Linux servers. Security is important for me. I know that one of the important security measure is passwords. The length, complexity, change period etc. How can I...
The problem is we want to change the already created user name or user id. As we know there is a lot of configuration those rely on the user id like permissions. We will use...
Linux passwords are used to authenticate users. Linux passwords was hold in /etc/passwd file with other user related information like default shell, home directory path etc. Now in modern Linux distributions holds passwords in /etc/shadow...
I have Linux servers. There is a lot of different remote connection services like ssh, telnet, vnc, X11, konsole etc. I want to learn who is logged currently. And get details like connection way, connection...
