Linux note Four-------management of users and groups

1.linux Multi-user, multi-tasking operating system

CAT/ETC/PASSWD// View current system user Information

Cat/etc/group// View current system group Information

2.rbac: Role-based assignment of permissions

User ---------- Group ----------- permission settings

3. The above situation,( Each user has a group ), because the user does not specify the category

Man_useradd put useradd 's help document manual

4. User Action

5. Group Operations

6. Set a password for the user to log on to the system

Change password is consistent with setting password operation

Linux note Four-------management of users and groups