usermod Command - Modify a User Account

The usermod command is used to modify a user account in Linux. It can change user information, group memberships, login shell, home directory, and more.

Syntax

usermod [options] username

Examples

sudo usermod -s /bin/zsh alice

sudo usermod -aG sudo bob

sudo usermod -d /home/newhome -m carol

Notes

• Requires root privileges.
• Be careful when changing user IDs or home directories, as it may affect file ownership and permissions.
• Use -aG to append a user to a group without removing them from other groups.