Unix Test Answer 2019

1. Which file contains the commands that the system executes when a user logs in?

Answers: • $HOME/.profile

2. The executable file name for the Bourne shell is :

Answers: • sh

3. By which command a user can add a password for his login name?

Answers: • passwd

4. Which of the following is the only filter?

Answers: • wc

5. Consider the following file listing of file abc1 for a user abc

-rw——- 1 abc student 10 jan 10:39 abc1

What inference would you make regarding the file access permissions ?

Answers: • Only the owner has full permissions.

6. Which command gives all differences between two files ?

Answers: • diff

7. Which of the following shells is typically used for guest logins and in secure systems ?

Answers: • sh

8. Which option of the sort filter changes the output to reverse order ?

Answers: • -r

9. Which of the following is not a valid file command ?

Answers: • break

10. Which wild-card matches one character ?

Answers: • @

11. A single command which lists all files in a directory, distinguishing between a directory, executable and symbolic link files is:

Answers: • ls -l

12. What would be displayed on the screen if the pwd command is entered when the user is in /usr directory?

Answers: • usr>

13. Which of the following statements is incorrect regarding positional parameters ?

Answers: • The command name is put into the variable $1.

14. How can a root user find the password of a user who has forgotten his password?

Answers: • It is not possible

15. Which of the following statements is incorrect regarding the UNIX environment?

Answers: • It does not allow relative path names.

16. Which command is used for splitting a file horizontally?

Answers: • a, b and c

17. Which of the following is a responsibility of the system administrator?

Answers: • a,b and c

18. The shell variable that defines internal field separator is.

Answers: • IFS

19. Which of the following statements is not true regarding the grep filter?

Answers: • grep can be used without specifying a regular expression.

20. What control character signals the end of the file ?

Answers: • Ctrl+d

21. Which command will you use to see the available routes and their status?

Answers: • netstat -rn

22. Which error will you see when an NFS client can no longer access mounted file system?

Answers: • File Inaccessible

23. What is the user id of a root user?

Answers: • 0