Unix interview questions part 40
Unix interview questions part 40
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Total Questions: 20
1. Environment variables control the behavior of the system.
Correct Answer is : TRUE
2. The shell has ____ prompts.
Correct Answer is : 2
3. Which one of the following command will change our primary prompt from $ to C>?
Correct Answer is : PS1=”C> “
4. Which environment variable is used to display our username?
Correct Answer is : LOGNAME
5. Which one of the following is not an environment variable?
Correct Answer is : env
6. Which symbol is used for setting the PS1 prompt to show the current event number?
Correct Answer is : !
7. Which escape sequence is used with PS1 to show the hostname of our computer?
Correct Answer is : \h
8. Which of the following shells support the use of aliases?
Correct Answer is : Korn and bash
9. We can display an alias definition by using an alias with the name.
Correct Answer is : TRUE
10. Which command is used in bash and Korn shells to display the previously used commands?
Correct Answer is : history
11. To display the last five used commands, which one of the following commands is used (in bash shell)?
Correct Answer is : history 5
12. Which of the following symbols are used for accessing previous commands by event numbers?
Correct Answer is : ! and r
13. We can use relative addressing while executing previous commands.
Correct Answer is : TRUE
14. We can also execute previous commands by context.
Correct Answer is : TRUE
15. Which symbol is used as a shorthand for using the last argument to the previous command?
Correct Answer is : $
16. ____ command is used for sorting a file on specified fields.
Correct Answer is : sort
17. By default, sort command reorders lines in ASCII collating sequence.
Correct Answer is : TRUE
18. Sort command uses ____ as default field delimiter.
Correct Answer is : one or more continuous spaces
19. Which option is used with sort command to specify the field delimiter?
Correct Answer is : -t
20. Which option is used for sorting a file according to primary key?
Correct Answer is : -k
