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RH124: Chapter 4,5,6 - Coggle Diagram

- - - - file does not exist
- - - - superuser
        
        UID of 0
        
        root as name
        
        administer the system
        
        full system access
      - system user
        
        Processes/daemons
        
        limited system access
      - regular user
        
        Most common
        
        limited system access
    - - /etc/passwd file
        
        Username
        
        Password (=> /etc/shadow)
        
        UID
        
        GID
        
        UIDInfos
        
        Home
        
        shell
        
        for more information: Doc
    - - $ su username
        
        $ su - username
      - $ sudo su username
    - - Create:
        useradd username
      - Modify
        
        Attributs :
        usermod [Options] [Parameters] login
        -u, -g, -G, -d, -m, -s, -c, -l, -e, ...
        
        Password:
        passwd username
      - Remove:
        userdel username
  - - - /etc/group file
        
        Group name
        
        Group Password
        
        GID
        
        Group users
        
        For more information: Doc
    - - Primary
        
        Secondary
    - - Create:
        groupadd [options] [parameters] group_name
        -g, -r, ...
      - Modify:
        groupmod [Options] [Parameters] group_name
        -n, -g, ...
      - Remove:
        groupdel group_name
- - - - 1 User commands (by default)
      - 5 file formats and conventions
      - 8 system administration commands
      - remaining sections 2, 3, 4, 6, 7, 9 (advanced adm)
    - - EXAMPLES
      - FILES
      - OPTIONS
      - SEE ALSO
      - DESCRIPTION
      - BUGS
      - SYNOPSIS
      - AUTHOR
      - NAME
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