250+ TOP MCQs on Built-in Commands and Answers

Linux / Unix questions and answers focuses Built-in Commands in Linux Bash Shell. This is set-2.1. The ‘logout’ built in command is used to
a) shutdown the computer
b) logoff of the computer
c) logout the current user
d) to exit the current shell

Answer: d
Clarification: None.

2. The command ‘umask -S’
a) prints the current mask using symbolic notation
b) prints the current mask using octal numbers
c) sets the mask to 000
d) sets the mask to 777

Answer: a
Clarification: None.

3. The ‘mapfile’ command
a) reads lines of standard input and assigns each to the element of an indexed array
b) reads lines of standard output file
c) reads lines of standard error file
d) none of the mentioned

Answer: a
Clarification: None.

4. Which option of the kill command sends the given signal name to the specified process?
a) -l
b) -n
c) -s
d) -a

Answer: c
Clarification: None.

5. Which command removes a directory from directory stack?
a) dirs
b) popd
c) pushd
d) rm

Answer: b
Clarification: None.

6. Which command puts a script to sleep untill a signal is recieved?
a) sleep
b) suspend
c) disown
d) break

Answer: b
Clarification: None.

7. The command ‘ulimit’
a) set a limit on specified resource for system users
b) set/show process resource limit
c) set a limit on specified resource for system users & set/show process resource limit
d) none of the mentioned

Answer: c
Clarification: None.

8. Which command identifies the resource of a command?
a) type
b) typeset
c) select
d) source

Answer: a
Clarification: None.

9. Which command wait for the specified process to complete and return the exit status?
a) sleep
b) wait
c) delay
d) stop

Answer: b
Clarification: None.

10. Which command prints the accumulated user and system times for processes run from the shell?
a) time
b) times
c) both time and times
d) none of the mentioned

Answer: b