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Old 09-28-2012, 09:15 AM   #1
thesullster
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usermod -a -G


usermod -a -G sudo john does what ?

add user (john) to group (sudo) ?

what is the reverse command ? to remove john from sudo ?


thanks all !
 
Old 09-28-2012, 09:53 AM   #2
TobiSGD
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As always, you will find the answer in the man-page of the command:
Code:
man usermod
In this case, if you want to remove a user from a group you have to use the -G option without -a and specify in which groups the user should remain a member. The user will be removed from any group that exists but is not specified in the command.
 
  


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