BASH Users
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Add A New User
sudo adduser <username>
Add A User To The Sudoers Group
sudo usermod -aG sudo <username>
Add A New User As A Member Of Specific Groups
sudo usermod -aG sudo,lpadmin,sambashare <username>
Delete A User
userdel <username>
Delete A User And Their Home Directory
userdel -r <username>
Change User Password
sudo passwd <username>
Follow the prompts.
Change User Password One Liner Batch Mode
echo "username:password" | chpasswd
Show Members Of A Linux Group
groupmems -l -g groupname
Force User To Change Their Password At Next Login
sudo chage -d 0 user
