Question 1

Which variable contains current shell process id

Accepted Answer

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

Question 2

Which of the following command output contains userid?

Accepted Answer

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

Question 3

Which of the following is not a filter command?

Accepted Answer

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

Question 4

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

Accepted Answer

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

Question 5

Solaris is the name of a flavor of UNIX from

Accepted Answer

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

Question 6

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

Accepted Answer

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

Question 7

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

Accepted Answer

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

Question 8

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

Accepted Answer

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

Question 9

Hidden files are

Accepted Answer

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 10

While executing a command, the shell

Accepted Answer

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 11

pwd command displays

Accepted Answer

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

Question 12

Shell is ?

Accepted Answer

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

Question 13

Which of the following is not a communication command?

Accepted Answer

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

Question 14

Effective group id can be set using following permission

Accepted Answer

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

Question 15

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

Accepted Answer

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

Question 16

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

Accepted Answer

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

Question 17

Which command sets the number for all lines?

Accepted Answer

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

Question 18

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

Accepted Answer

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

Question 19

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

Accepted Answer

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

Question 20

Which of the following is true?

Accepted Answer

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

Exam 2: Unix Commands and Permissions