Unix interview questions part 37
Unix interview questions part 37
Take as many assements as you can to improve your validate your skill rating
Total Questions: 20
1. Which of the following expression is a correct wildcard pattern if we want an expression in which the last character is not numeric?
Correct Answer is : *[!0-9]
2. The shell waits for the command to complete and normally can’t do any work while the command is executing.
Correct Answer is : TRUE
3. Which of the following is/are true about Shell?
Correct Answer is : Shell is a multi-faceted, command interpreter and provides an environment to work in
4. To change the login shell in some system (like Linux) we can use ____ command.
Correct Answer is : chsh
5. set command by default displays the variables in the current shell.
Correct Answer is : TRUE
6. Which one of the following keyword is used with the set command to avoid overwrite existing file?
Correct Answer is : noclobber
7. To prevent accident logging out, we can use ____ as a keyword with the set command.
Correct Answer is : ignoreeof
8. To reverse any setting updated by set command we can use ____ symbol.
Correct Answer is : #ERROR!
9. The ____ acts as a shorthand representation of the home directory.
Correct Answer is : ~
10. Every shell uses at least one startup script in the user’s home directory, which is executed when the user logs in.
Correct Answer is : TRUE
11. Which file is executed every time a second shell is called up?
Correct Answer is : rc file
12. Which of the following are history variables?
Correct Answer is : HISTISIZE and HISTFILESIZE
13. Which one of the following command will search history list for the previous command having the last occurrence of string cvf?
Correct Answer is : /cvf
14. What is a shell script?
Correct Answer is : a file containing a series of commands
15. Shell scripts need to be saved with an extension .sh .
Correct Answer is : FALSE
16. Shell scripts are executed in a separate child shell process.
Correct Answer is : TRUE
17. The first line in any shell script begins with a _____
Correct Answer is : #
18. To run the script, we should make it executable first by using _____
Correct Answer is : chmod +x
19. To spawn a child of our own choice for running the script, we can use ___ command.
Correct Answer is : sh
20. Which command is used for making the scripts interactive?
Correct Answer is : read
