How to check which group a user belongs to in Linux

View method: 1. Directly execute the "groups" command to view the groups to which the current user belongs; 2. Execute the "groups username" command to view the groups to which the specified user belongs; 3. Execute "id username" command to view the groups to which the specified user belongs; 4. Execute the "cat /etc/group" command to output the group file information.

#The operating environment of this tutorial: linux5.9.8 system, Dell G3 computer.

Linux method to check which group a user belongs to:

Method 1: Usegroupsdirectly to view The group to which the current user belongs

# groups root

Method 2: Usegroups usernameto view the group to which the specified user belongs

# groups xly xly : xly

Method 3: Useid usernameto view the group to which the specified user belongs

# id xly uid=500(xly) gid=500(xly) groups=500(xly)

Method 4: Directly view the group file,cat /etc/group

# cat /etc/group root:x:0: bin:x:1:bin,daemon daemon:x:2:bin,daemon sys:x:3:bin,adm adm:x:4:adm,daemon tty:x:5: disk:x:6: lp:x:7:daemon mem:x:8: kmem:x:9: xly:x:500:

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