Overview

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

• useradd, userdel
  • Key useradd options
• useradd, userdel
  • Key groupadd options

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.