Unix interview questions part 46
Unix interview questions part 46
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Total Questions: 20
1. Which of the following is a built-in function for awk?
Correct Answer is : length
2. The _____ function extracts a substring from a string.
Correct Answer is : substr
3. awk makes a distinction between numeric and string variables.
Correct Answer is : FALSE
4. Which editor is used by the UNIX system to edit files?
Correct Answer is : vi
5. What does the following command do? $ vi file001
Correct Answer is : open file if it exists else creates a new file
6. Which option is used by vi editor to open a file in read mode only?
Correct Answer is : -R
7. How many types of modes are used by vi editor?
Correct Answer is : 3
8. What is the default mode of vi editor?
Correct Answer is : Command mode
9. To insert text into a file, _____ mode is used.
Correct Answer is : Input mode
10. ex mode is used for what purpose?
Correct Answer is : file handling and substitution
11. Which one of the following key is used to switch from command mode to input mode?
Correct Answer is : i
12. ____ key is used for switching to command mode from input mode.
Correct Answer is : esc
13. Which of the following key is used to enter in ex-mode?
Correct Answer is : :
14. ex-mode is used to save our work.
Correct Answer is : TRUE
15. Commands inputted in command mode don’t appear on the terminal.
Correct Answer is : TRUE
16. To clear the screen in vi editor, _____ is used.
Correct Answer is : ctrl-l
17. vi commands are not case sensitive.
Correct Answer is : FALSE
18. While entering text in input mode the data is saved in _____
Correct Answer is : buffer
19. To quit vi editor without saving the buffer we can use
Correct Answer is : :q!
20. The first UNIX editor was ____
Correct Answer is : ed
