Linux, Windows, Security, Programming, Network Tutorials
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 to a Linux group and its variations like creating group, deleting group, listing group members etc. Linux Groups Linux groups … Read more
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
chage is a tool and command used to change user password expiry information in Linux, BSD, Unix systems. With this command we can set password change time, lock status, activity or inactivity of the user account. Syntax We will use following syntax for chage command. chage [options] LOGIN Help $ chage -h Show Password And Related … Read more
Linux provides usermod command by default for the most of the distributions. This command is used to user modification. After user creation the user related information, values and policies can be changed with usermod command. In this tutorial we will look various features of usermod command with examples. Syntax Syntax of the usermod command is like … Read more
We have an application that needs higher privileges than normal user. This application may be run with root user. But we need to run this application with normal user with root privileges. Sudo Command sudo command is used to elevate user privileges to higher. Generally used to run commands as root user. Commands issued with … Read more
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 usermod command to make this change. Keep in mind this changes will effects system wide. List User Info Before starting … Read more
In Linux users may have different groups registered. By default adding a user to the Linux system will create new user. There are different commands to change user group one of them is useradd which actually create new user and sets given group to the newly created user. As always we need root privileges to … Read more
How can I disable some Linux account? By disabling it I do not want to remove the account and related files. Just user related operations will be prevented. If an user authentication occurs it will be not authenticated. We will use usermod command to lock user account. Disable/Lock User Account with usermod Command We will disable account … Read more