Unix interview questions part 21
Unix interview questions part 21
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Total Questions: 20
1. POSIX is a set of standards specified for establishing compatibility between operating systems.
Correct Answer is : TRUE
2. Shell is a command interpreter used for interacting with a UNIX system.
Correct Answer is : TRUE
3. Which part of the UNIX operating system interacts with the hardware?
Correct Answer is : Kernel
4. Two UNIX systems may or may not use the same set of system calls.
Correct Answer is : FALSE
5. What is a superuser?
Correct Answer is : system manager
6. What is the windowing system of UNIX known as?
Correct Answer is : X Window system
7. Which command is used for listing files in a directory?
Correct Answer is : ls
8. Which option is used with ls command for long listing of files with seven attributes?
Correct Answer is : -l
9. Which option is used with ls to display attributes of the directory ?
Correct Answer is : -d
10. -a option is used with ls command for what purpose?
Correct Answer is : for showing hidden files
11. Which option is used with ls command to produce multi columnar output?
Correct Answer is : -x
12. What is the collating sequence of ls command for listing files?
Correct Answer is : Numerals > Uppercase > Lowercase
13. How can we identify executables and directories from the output of ls command?
Correct Answer is : using -F option
14. $ ls -R outputs all files and subdirectories in a recursive manner.
Correct Answer is : TRUE
15. -r option is same as -R option in ls command.
Correct Answer is : FALSE
16. What does the -S option do in ls command?
Correct Answer is : sorts according to file size
17. ls -s prints the allocated file size in blocks.
Correct Answer is : TRUE
18. -u option sorts the files according to ____
Correct Answer is : last access time
19. -t option sorts the files according to ____
Correct Answer is : last modification time
20. The output of ls dir* is ___
Correct Answer is : all files in the directory having a filename starting with dir
