1  /etc/adduser.conf (5) [adduser.conf] - configuration file for adduser(8) and addgroup(8) .
     2  /etc/deluser.conf (5) [deluser.conf] - configuration file for deluser(8) and delgroup(8) .
     3  addgroup (8)         - add a user or group to the system
     4  adduser (8)          - add a user or group to the system
     5  adduser.conf (5)     - configuration file for adduser(8) and addgroup(8) .
     6  bsd-write (1)        - send a message to another user
     7  chage (1)            - change user password expiry information
     8  check_driver (1)     - Linux 2.6(.16+) userspace device rebinding helper.
     9  chfn (1)             - change real user name and information
    10  crontab (1)          - maintain crontab files for individual users (V3)
    11  defoma-user (1)      - Debian Font Manager for users
    12  delgroup (8)         - remove a user or group from the system
    13  deluser (8)          - remove a user or group from the system
    14  deluser.conf (5)     - configuration file for deluser(8) and delgroup(8) .
    15  environ (7)          - user environment
    16  fuser (1)            - identify processes using files or sockets
    17  futex (4)            - Fast Userspace Locking
    18  futex (7)            - Fast Userspace Locking
    19  group (5)            - user group file
    20  groups (1)           - print the groups a user is in
    21  hosts.equiv (5)      - list of hosts and users that are granted "trusted"r command access to your system
    22  id (1)               - print user identity
    23  intro (1)            - Introduction to user commands
    24  last (1)             - show listing of last logged in users
    25  lastb (1)            - show listing of last logged in users
    26  lastlog (8)          - reports the most recent login of all users or of a given user
    27  logname (1)          - print user's login name
    28  netlink (7)          - Communication between kernel and userspace (PF_NETLINK)
    29  newusers (8)         - update and create new users in batch
    30  nologin (5)          - prevent non-root users from logging into the system
    31  passwd (1)           - change user password
    32  PF_NETLINK (7)       - Communication between kernel and userspace (PF_NETLINK)
    33  readline (3readline) - get a line from a user with editing
    34  su (1)               - change user ID or become super-user
    35  sudo (8)             - execute a command as another user
    36  sudoedit (8)         - execute a command as another user
    37  sudoers (5)          - list of which users may execute what
    38  sulogin (8)          - Single-user login
    39  tasksel (8)          - a user interface for installing tasks
    40  telnet (1)           - user interface to the TELNET protocol
    41  telnet.netkit (1)    - user interface to the TELNET protocol
    42  ucf (1)              - Update Configuration File: preserve user changes in configuration files
    43  udp (7)              - User Datagram Protocol for IPv4
    44  unix_chkpwd (8)      - check the password of the invoking user
    45  useradd (8)          - create a new user or update default new user information
    46  userdel (8)          - delete a user account and related files
    47  usermod (8)          - modify a user account
    48  users (1)            - print the user names of users currently logged in to the current host
    49  wall (1)             - write a message to users
    50  whoami (1)           - print effective userid
    51  write (1)            - send a message to another user
    52  xset (1)             - user preference utility for X