Unix/Lunux MCQ Quiz Hub

1. What is Unix?
Unix is a programming language
Unix is a software program
Unix is an operating system
Unix is a text editor

2. The Unix shell is both _______ and _______ language.
scripting, interpreter
high level, low level
interactive, responsive
interpreter, executing

3. In which language UNIX is written?
C++
C
JAVA
Python

4. Which of the following is the first UNIX editor?
vi
emacs
ed
ed

5. Which of the following is not a feature of Unix?
multiuser
easy to use
multitasking
portability

6. Which of the following is not true about Unix?
UNIX was not written in ‘C’ language
Linux is also known as a version of UNIX
A user can run multiple programs at the same time; hence UNIX is called a multitasking environment
Many people can use a UNIX based computer at the same time; hence UNIX is called as a multiuser system

7. Which editor is used by the Unix system to edit files?
word
notepad++
vi
notepad

8. Which of the following is not a part of all the versions of Unix?
System Calls
Graphical user interface
Kernel and Shell
Commands and utilities

9. Which part of the Unix operating system interacts with the hardware?
Application program
Vi editor
Shell
Kernel

10. Which command is used to display the documentation of commands in Unix?
man
whatis
help
search

11. Which Unix command is used for changing the current directory?
pwd
rm
cd
cp

12. Which command is used for printing the current working directory?
dir
HOME
cd
pwd

13. Which command is used for listing files in a directory?
list
ls
wc
ps

14. Which command is used by the user to change their login password in Unix?
cp
man
reset
passwd

15. Which command is used for displaying the contents of a file in Unix?
mkdir
cat
rm
cp

16. Which command is used to compress files?
gzip
gunzip
comm
cmp

17. Which command is used for displaying the beginning of a file in Unix?
lp
begin
pr
head

18. Which symbol is used with the tail command to print the file from the selected line? d)
%%
^
+
–

19. Which command is used to delete all files in a directory?
del *
rm *
mv *
rmdir *

20. echo command is used for _________
displaying diagnostic messages
displaying date and time
displaying errors
displaying operating system details

21. What is the function of cp command in Unix?
delete a given file
change the directory
list all the available files in the current directory
cp is a command used for copying files and directories

22. Which command is used for removing/deleting files in Unix?
rm
mv
rmdir
del

23. Which command is used for renaming files in Unix?
rename
move
mv
cp

24. Which command is used for comparing two files?
comp
cmp
comm
diff

25. Which Unix command is used for counting words, lines, and characters in a file?
wc
man
count
diff

26. Which command is used for saving and quitting the vi editor simultaneously?
‘:x’
:f
:q
:w

27. How can we escape to the UNIX shell without quitting vi editor?
using ‘:sh’ command and using ctrl-Z
using ‘:sh’ command
using ctrl-Z
using ctrl-D

28. Which of the following files are known as special files in Unix?
/dev/null
sample.txt
/dev/null and /dev/tty
/dev/tty

29. What is the output of the following Unix command? $ wc -c *.c
size of each .c file
total size of .c files
erroneous
undefined

30. In Unix, for what purpose bc command is used?
for copying files
as a process table viewer
as an editor
as a calculator

31. Which process is immediately set up by the kernel when we log on to a Unix system?
System
bash
shell
parent

32. Which command shows some attributes of a process?
HOME
ps
$$
pid

33. Which of the following system call is used for creating a new process in Unix?
new
wait
read
fork

34. Which Unix command is used for locating files?
type
loc
find
search

35. Which command is used for preparing a file for printing?
pr
print
cat
cd

36. Which command is used for sorting a file on specified fields?
pr
cut
tail
sort

37. Which Unix command is used for locating repeated and non-repeated lines?
cut
paste
uniq
sort

38. Which command is used for translating characters?
paste
tr
trans
sort

39. Which of the following command will be used for searching “director” in emp.lst?
grep “director” emp.lst
grep -director emp.lst
grep -v “director” emp.lst
grep “director”

40. Which of the following command is used for searching for a pattern in one or more file(s)?
paste
grep
cd
cp

41. Which of the following commands is known as stream editor?
grep
tr
sed
td

42. What is a shell script?
group of functions
a file containing a series of commands
a file containing special symbols
group of commands

43. To run the script, we should make it executable first by using _____
chmod +w
chmod +rwx
chmod +x
chmod +r

44. Which command is used to find out the consumption of a specific directory?
mem
dv
du
df

45. Which filter apart from perl, is the most powerful?
awk
grep
cut
sed

46. Which filter apart from perl, is the most powerful?
awk
grep
cut
sed

47. For running a Unix command within awk, we’ve to use ____ function.
split
system
substr
length

48. To extract specific columns from a file ____ command is used.
cut
pr
head
tail

49. Which of the following cannot be performed by cat command?
appending files
deleting files
creating files
displaying files

50. What is the default delimiter used by the cut command for cutting fields?
space
underscore
tab
double tab

51. Which of the following is not an internal command used by mailx?
d
N
a
q

52. Which command is used for printing the current working directory?
HOME
cd
pwd
dir

53. Which command is used for changing the current directory?
cd
cp
pwd
rm

54. Which command is used for creating directories?
rmdir
mkdir
cd
cp

55. Which command is used for creating directories?
rmdir
mkdir
cd
cp

56. What does the following command do? $ mkdir dir dir/dir_01/dir_02
create dir, dir_01 and dir_02
creates dir_02
creates dir only
throws an error

57. Sometimes we are unable to create a directory because ______________
the directory may already exist in the current directory
there may be an ordinary file by the same name in the current directory
the permissions set for the current directory does not allow the creation
the directory may exist, there may be an ordinary file, the permissions set for the current directory does not allow the creation

58. Which command is used for removing an empty directory?
mkdir
rmdir
del
remove

59. If rmdir dir001 fails, what could be the reason(s)?
dir001 doesn’t exist
dir001 is not empty
permissions of dir001 doesn’t allow to remove it
dir001 doesn’t exist, dir001 is not empty and permissions of dir001 doesn’t allow to remove it

60. Which of the following keys is used to replace a single character with new text?
S
s
r
C

61. $ cp file_01 . copies the file named file_01 in ____ directory
current
parent
root
user

62. The output of the following command is __________ $ cp abd/ .user_06
copies .user_06 file in current directory
copies .user_06 file in parent directory of directory named abd
undefined behaviour
erroneous output

63. For moving two level up in the file hierarchy system using cd command once, we separates ( . . ) by which symbol?
?
$
*
/

64. Which command is used for listing files in a directory?
ps
list
ls
wc

65. Which option is used with ls command for long listing of files with seven attributes?
-a
-l
-x
-i