linux_wiki:create_delete_and_modify_local_groups_and_group_memberships [Owlbear Consulting

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====== Create Delete And Modify Local Groups And Group Memberships ======

**General Information**

Local group management. 

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===== Important Files =====

Groups config file
  * /etc/group

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===== Group Commands =====

See what groups a user is a part of (two methods)
<code bash>
id student
groups student
</code>

\\
See what members are apart of the group "class1"
<code bash>
getent group class1
OR
groupmems -l -g class1
</code>

\\
Create new group
<code bash>
groupadd class1
</code>
  * Other options
    * -g => specify a group id
    * -r => create a system group

\\
Set primary group (-g) for the user "student" to "class1"
<code bash>
usermod -g class1 student
</code>

\\
Append (-a) supplementary group(-G) for the user "student"
<code bash>
usermod -aG class2 student
</code>

\\
Change group name to "class5" from "class1"
<code bash>
groupmod -n class5 class1
</code>

\\
Delete group
<code bash>
groupdel class5
</code>
  * Note: Cannot delete a user's primary group

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