250+ TOP MCQs on Linux Commands and Answers

Linux / Unix questions and answers focuses on various Unix administration commands. It will be useful for anyone learning basic Unix Administration.

1. Command used to determine the path of an executable file is
a) which
b) where
c) wexec
d) what
Answer: a
Clarification: None.

2. Command used to count number of character in a file is
a) grep
b) wc
c) count
d) cut
Answer: b
Clarification: None.

3. Which of these commands could you use to show one page of output at a time?
a) less
b) sed
c) pause
d) grep
Answer: a
Clarification: None.

4. Which commands will give you information about how much disk space each file in the current directory uses?
a) ls -l
b) ls -la
c) du
d) ls -a
Answer: c
Clarification: None.

5. Which of the following command output contains userid?
a) ls
b) help
c) date
d) ls –l
Answer: d
Clarification: None.

6. Which command is used to display all the files including hidden files in your current and its subdirectories ?
a) ls –aR
b) ls –a
c) ls –R
d) ls –l
Answer: a
Clarification: None.

7. Which of the following commands can be used to copy files across systems?
a) ssh
b) telnet
c) rsh
d) ftp
Answer: d
Clarification: None.

8. pwd command displays
a) user password
b) password file content
c) present working directory
d) none of the mentioned
Answer: c
Clarification: None.

9. Which of the following commands can be used to change default permissions for files and directories at the time of creation
a) Chmod
b) Chown
c) Umask
d) Chgrp
Answer: c
Clarification: None.

10. Which tar command option is used to list the files in a tape archive format?
a) cvf
b) tvf
c) xvf
d) ovf
Answer: b
Clarification: None.

11. Which of the following commands will allow the user to search contents of a file for a particular pattern
a) touch
b) grep
c) find
d) ls
Answer: b
Clarification: None.

Linux Commands & Shell Programming.