Deck 1: Introduction to Unix Operating System and Shell Programming

Question 1

Unix OS was first developed by

A)dennis ritchie
B)bjarne stroustrup
C)ken thompson
D)brian kernighan

Answer 1

ken thompson

Question 2

Unix OS was first developed at

A)microsoft corp. usa
B)at & t bell labs, usa
C)ibm, usa
D)borland international, usa

Answer 2

at & t bell labs, usa

Question 3

Unix is written in

A)c language
B)ada language
C)perl language
D)pascal language

Answer 3

c language

Question 4

Unix is a

A)single user, single tasking os
B)single user, multi-tasking os
C)multi-user, multi- tasking os
D)none

Question 5

Which of the following is a command for searching a pattern in a file?

A)find
B)grep
C)look up.
D)none

Question 6

Unix Command can be typed in

A)lower case
B)upper case
C)both the cases
D)none

Question 7

Shell Program is stored in a file called

A)unix
B)sh
C)dd
D)cc

Question 8

WhicBh shell offers a command history feature

A)c shell
B)visual shell
C)bourne shell
D)korn shell

Question 9

The minimum number of links for any directory file are

A)3
B)4
C)1
D)2

Question 10

The default value of Umask is

A)1024
B)4021
C)0022
D)1001

Question 11

Binary executable required for system administration is usually placed in ________ directory.

A)letc
B)lusr
C)ldev
D)none

Question 12

All user directories are usually placed in _________ directory.

A)letc
B)lusr
C)ldev
D)none

Question 13

If there are three links for a file then the number of copies of the file would be

A)one
B)two
C)three
D)four

Question 14

After typing the contents of file test created by you by giving the command cat>test you save the contents by

A)pressing the keys ctrl-c
B)typing save and pressing enter
C)pressing esc key
D)pressing ctrl-d

Question 15

The file for which we do not have write permission can be deleted using the command

A)rm-i file
B)rm-i file.
C)rm-r-file.
D)rm-f-file

Question 16

The permission 746 can be represented as

A)rwxrwx- -x
B)rw- -w-r-x
C)rwxr-xr-x
D)rwxr- -rw-

Question 17

A Sticky bit applies to a file would mean that

A)no one can remove it
B)it would stick around in memory even when its execution is over
C)next time you login it would get executed on its own
D)none of the above

Question 18

The command pwd gives

A)present working directory
B)password in encrypted form
C)password in decrypted form
D)none

Question 19

Which of the following is not a unix command

A)cd
B)rm
C)pwd
D)del

Question 20

The size of any block in the unix file system is

A)512 bytes
B)1024 bytes
C)2048 bytes
D)any of the above

Question 21

To find the block size on your file system the command is

A)blksz
B)szblk
C)chksz
D)cmchk

Question 22

Each entry in inode table is of size

A)64 kb
B)32kb
C)32 bytes
D)64 bytes

Question 23

The program contained in boot block, that loads kernel into memory is called

A)disk bootstrap program
B)master boot program
C)shell program
D)none of the above

Question 24

The state of the file system is contained in

A)boot block
B)a special block created by book block
C)super block
D)none of the above

Question 25

Which file gets executed when we use the passwd command

A)/etc/passwd
B)/etc/pwd
C)/bin/passwd
D)/passwd