Linux Add users and add group procedures

1. Create a user name and password for users who are Hadoop:

Useradd Hadoop

passwd Hadoop

1. We have a group named Hadoops

Groupadd Hadoops

2. Add Hadoop users to the Hadoops group

gpasswd-a Hadoop hadoops

Adding user Hadoop to group Hadoops--this line appears to add success

Description: Return the Hadoop user to the Hadoops group

gpasswd-d Hadoop hadoops

Removing user Hadoop from group hadoops--This line indicates a successful removal

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Linux Add users and add group procedures