Deck 2: Unix Commands and Permissions

Question 1

Which of the following is not a communication command?

A)grep
B)mail
C)mesg
D)write

Answer 1

grep

Question 2

What command is used with vi editor to move back to the beginning of a word?

A)w
B)e
C)a
D)b

Answer 2

b

Question 3

What command is used with vi editor to search a pattern in the forward direction?

A)(??)
B)(//)
C)(?)
D)(/)

Answer 3

(/)

Question 4

Which of the following is not a filter command?

A)sort
B)wc
C)grep
D)cat

Question 5

While executing a command, the shell

A)Executes it in the same process (as shell)
B)Creates a child shell to execute it
C)Loads a special program to take care of the execution
D)None of the mentioned

Question 6

Which variable contains current shell process id

A)$*
B)$?
C) $$
D)$!

Question 7

Hidden files are

A)Those whose 'read' bit is set to 'h'
B)Permitted for (can be accessed) only superusers
C)Files that begin with a '.'
D)Files that cannot be opened by ordinary user for writing

Question 8

Shell is ?

A)Command Interpreter
B)Interface between Kernel and Hardware
C)Interface between user and applications
D)Command Compiler

Question 9

Which command searches the string in file opened in vi editor?

A)/ or ?
B)f or F
C)t or T
D)none of the mentioned

Question 10

Which command sets the number for all lines?

A):set li
B):set ln
C):set nu
D):set nl

Question 11

Which of the following is true?

A)Shell is a process and can be started by superuser only
B)Shell is a built-in Kernel functionality
C)Shell is a wrapper for all the commands and utilities
D)None of the mentioned

Question 12

The permission -rwxr-r- represented in octal expression will be

A)777
B)666
C)744
D)711

Question 13

Effective group id can be set using following permission

A)0777
B)2666
C)4744
D)1711

Question 14

The permission -rwSr-r- represented in octal expression will be

A)0777
B)2666
C)4744
D)4644

Question 15

Which of the following umask settings doesn't allow execute permission to be set by default on directory files

A)222
B)111
C)000
D)444

Question 16

Write the command to display the current date in the form dd/mm/yyyy.

A)date +%d/%m/%Y
B)date +"%d/%m/%Y"
C)date +/%d/%m/20%y
D)date +"/%d/%m/20%y"

Question 17

How to execute ls command inside a vi editor?

A)!ls
B):ls
C):!ls
D)we can't execute

Question 18

What communication command provides communication to another user logged on by writing to the bottom of their terminal?

A)talk
B)write
C)chat
D)tr

Question 19

Which of the following command output contains userid?

A)ls
B)help
C)date
D)ls -l

Question 20

pwd command displays

A)user password
B)password file content
C)present working directory
D)none of the mentioned

Question 21

What is the default number of files open per user process?

A)0
B)1
C)2
D)3

Question 22

Solaris is the name of a flavor of UNIX from

A)HP
B)IBM
C)Digital Equipment Corp
D)Sun Microsystems