Overview

Let's learn about the types of HBase Client APIs used to work with HBase.

useradd, userdel

Key useradd options

- -m: Create the user's home directory along with the user

- -d directory: Use directory as the user's home directory

- -e date: Specify date as the account expiration date

- -g group_id: Use group_id as the user's group ID

- -G group1, group2: Specify the user's group membership (multiple groups)

- -P password: Set password as the password

Create a new user

$ useradd user

Create a user with an account expiration date

$ useradd -e 2022-12031 user

Delete a user

$ userdel user

useradd, userdel

Key groupadd options

- -g gid: Use gid as the group ID

- -o: When creating a group with a group ID specified by the -g option, ignore errors even if the ID already exists and create the group anyway

Create a new group

$ groupadd mygroup

Create with group_id 555

$ groupadd -g 555 mygroup

Delete a group

$ groupdel mygroup

That concludes this post on how to add and delete Linux users and groups. Thank you.

Quiz

How to add or delete Users and Groups in Linux

-m: Create the user's home directory along with the user -d directory: Use directory as the user's

home directory -e date: Specify date as the account expiration date -g group_id: Use group_id as

the user's group ID -G group1, group2: Specify the user's group membership (multiple...

-g gid: Use gid as the group ID -o: When creating a group with a group ID specified by the -g

option, ignore errors even if the ID already exists and create the group anyway That concludes

this post on how to add and delete Linux users and groups. Thank you.