Unix interview questions part 18
Unix interview questions part 18
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Total Questions: 20
1. Which of the following is a valid option with script command?
Correct Answer is : -a
2. mailx command is used for sending and receiving emails.
Correct Answer is : TRUE
3. Which of the following function cannot be performed by mailx command?
Correct Answer is : un-send mails
4. Which of the following is not an internal command used by mailx?
Correct Answer is : a
5. -h option is used with who command for what purpose?
Correct Answer is : display output with header information
6. Two or more users can have same login name in the output of who command.
Correct Answer is : TRUE
7. history command displays the log of recently used commands.
Correct Answer is : TRUE
8. Which command is used by the user to change their login password in UNIX?
Correct Answer is : passwd
9. Which command handles a character stream by duplicating its input?
Correct Answer is : tee
10. We can use man command for displaying the documentation of man itself.
Correct Answer is : TRUE
11. When backspace doesn’t work to erase characters, we can use _____
Correct Answer is : ctrl-h
12. For interrupting a command, we can use _____
Correct Answer is : ctrl-c
13. Ctrl-S stops scrolling of screen output and ________
Correct Answer is : locks keyboard
14. Which control unlocks the keyboard?
Correct Answer is : ctrl-q
15. Which command is used for killing a line?
Correct Answer is : ctrl-u
16. Which one of the following command is used for searching for a pattern in one or more file(s)?
Correct Answer is : grep
17. Which one of the following is the correct syntax for grep command?
Correct Answer is : grep options pattern filename(s)
18. Which one of the following command will be used for searching “director” in emp.lst?
Correct Answer is : grep “director” emp.lst
19. When the pattern is not found in a file, grep command silently returns the prompt.
Correct Answer is : TRUE
20. grep command can be used for searching a pattern in more than one file.
Correct Answer is : TRUE
