How To Check User Permissions In Linux?
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1. Check User Group Membership To check the group membership of a user in Linux, use the command “groups [username]”. Substitute the username you wish to check with [username].
2. Check File Permissions You can use the “ls –l” command to check the permissions on a file. This will list all of the users, groups, and other entities that are associated with the file, as well as their read, write, and execute permissions.
3. View sudoers File The sudoers file contains a list of users who have administrative privileges on the system. Use the command “sudo visudo” to view this file.