Unix interview questions part 17
Unix interview questions part 17
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Total Questions: 20
1. Which option is used with the tail command for extracting bytes instead of lines?
Correct Answer is : -c
2. To extract specific columns from a file, ____ command is used.
Correct Answer is : cut
3. The expression cut -c -3 emp.lst will cut columns number _____
Correct Answer is : 45294
4. ____ option is used with the cut command for cutting fields.
Correct Answer is : -f
5. What is the default delimiter used by the cut command for cutting fields?
Correct Answer is : tab
6. Which option is used with the cut command for cutting field base on the value of our specified delimiter?
Correct Answer is : -d
7. We have to specify whether we want to cut fields or columns while using cut command.
Correct Answer is : TRUE
8. The following command will produce an error. $ cut -d “|” -f 1,4 emp.lst
Correct Answer is : FALSE
9. Which one of the following commands is incorrect?
Correct Answer is : $ tail -c 500 foo
10. Which command is used for pasting files?
Correct Answer is : paste
11. Whatever we have cut using cut command can be pasted back using paste command but vertically.
Correct Answer is : TRUE
12. paste command uses space as the default field delimiter.
Correct Answer is : FALSE
13. _____ option is used with paste command if we want to specify our own delimiter.
Correct Answer is : -d
14. Which option is used with paste command for joining lines?
Correct Answer is : -s
15. echo command is used for _________
Correct Answer is : displaying diagnostic messages
16. What are escape sequences?
Correct Answer is : special characters beginning with a \ (backslash)
17. Which of the following is not a valid escape sequence in UNIX?
Correct Answer is : \d
18. Which command is used as an alternative to echo command?
Correct Answer is : printf
19. For what purpose bc command is used?
Correct Answer is : as a calculator
20. script command is used for___________
Correct Answer is : recording our session
