Which run levels should never be declared as the default run level when using SysV init?
(Choose TWO correct answers.)

Which of the following commands set the sticky bit for the directory /tmp? (Choose TWO
correct answers.)

Which of the following are modes of the vi editor? (Choose two.)

Which of the following commands can be used to search for the executable file foo when it
has been placed in a directory not included in $PATH?

Which command will uninstall a package but leave its configuration files in case the package is
re-installed?

Which of the following commands prints a list of usernames (first column) and their primary

group (fourth column) from the /etc/passwd file?

Which of the following commands makes /bin/foo executable by everyone but writable only
by its owner?

Which of the following apt-get commands will install the newest versions of all currently
installed packages?

Which Bash environment variable defines in which file the user history is stored when exiting a
Bash process? (Specify ONLY the variable name.)

Which shell command is used to continue background execution of a suspended command?