SHELL

linux check user group list

groups user

check which users are part of a group linux

grep 'group-name-here' /etc/group

list user groups linux

groups

how to check user in group linux

# to see the group joined by current user
$ id 

groups
groups {USERNAME}
groups vivek

see what groups a user is in linux

# this will display what groups the active user is in
groups

linux user groups

 groups $username

What is user and group in linux?

User: the owner of the file (person who created the file).
Group:the group can contain multiple users. Therefore, all users in that group will have the same permissions. It makes things easier than assign permission for every user you want.