remove a user from a specific group

The old post shows how to add a user to a specific group. From time to time, I need to remove a user from a specific group. So here what I summarize how to do this.

2009/06/29 - [computer/linux] - add a user to a specific group

remove a user from a specific group

Here auser is the fake account to be removed from www-data group

Step 1

# vigr

change  from   auser:x:1001:www-data  to    auser:x:1001:

Then they will ask and notice the following messages:

You have modified /etc/group.

You may need to modify /etc/gshadow for consistency.

Please use the command 'vigr -s' to do so.

Step 2

 # vigr -s

You have modified /etc/gshadow.

You may need to modify /etc/group for consistency.

Please use the command 'vigr' to do so.

Step 3

Check group whether it is or not

# tail /etc/group

.....

utempter:x:119:

auser:x:1001: