USER GID LINUX PASSWORD

Example 1: Rename the User With the “usermod” Command in Linux In the section below, I will show you some of the most useful applications for the usermod command in Linux. In Linux, the usermod command is a helpful tool that allows superuser or root user to modify the user name, user ID, groups, home directory, password, user shell, expiry date, and other user details of an existing user. Practical Examples of the “usermod” Command in Linux Note: Commands and their options are case-sensitive in Linux.

-u, –uid: Specify the new numerical value of the user’s ID.

-s, –shell:Specify the user’s new login shell.

-R, –root CHROOT_DIR: Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory.

-p, –password: Allows to specify new un-encrypted password.

-o, –non-unique:This option allows to change the user ID to a non-unique value.

-m, –move-home:moving the contents of the home directory from the existing home directory to the new directory.

-l, –login:To change the login name from user_name to new_user_name.

-G, –groups:Use To add supplementary groups.

-g, –gid:Change the primary group for a User.

USER GID LINUX PASSWORD

-f, –inactive:The number of days after a password expires until the account is permanently disabled.The date is specified in the format YYYY-MM-DD. -e, –expiredate:Use to set account expiry date.-d, –home:Use to modify the login directory for any existing user account.-c, –comment:Use to add comment field for the user account.

-b, –badnames: Permit non-compliant names.-a, –append: Use toadd the user to the one or more supplementary group.

User gid linux