useradd

Question 1

useradd

Answer 1

useradd is a low level utility for adding users. On Debian, administrators should usually use adduser(8) instead.

Question 2

useradd

• b
• c
• d
• D
• e
• f

Answer 2

• b, –base-dir BASE_DIR, Base directory for the home directory of the new account.
• c, –comment COMMENT, GECOS field of the new account.
• d, –home-dir HOME_DIR, Home directory of the new account.
• D, –defaults, Print or change default useradd configuration.
• e, –expiredate EXPIRE_DATE
• f, –inactive INACTIVE

Question 3

useradd

• g, –gid GROUP, Set primary group.
• G, –groups GROUPS, List supplementary groups.
• k, –skel SKEL_DIR, Use this alternative skeleton directory.
• K, –key KEY=VALUE, Override /etc/login.defs defaults.
• l, –no-log-init, Do not add the user to the lastlog and faillog database.
• m, –create-home

Answer 3

• M, –no-create-home
• N, –no-user-group, Do not create group with the same name as user.
• o, –non-unique
• p, –password PASSWORD

Question 4

useradd

• r
• R
• s
• u
• U
• Z

Answer 4

• r, –system, Create a system account.
• R, –root CHROOT
• s, –shell SHELL, Set login shell of new account.
• u, –uid UID
• U, –user-group, Create group with same name as user.
• Z, –selinux-user SEUSER, Use a specific SEUSER for SELinux user mapping.