Question 1

The output of command banner "Unix shell programming" would be

Accepted Answer

A)  a banner showing 'unix','shell' and 'programming' words displayed in separate lines
B)  a banner showing 'unix shell' in one single line
C)  nothing
D)  a banner showing 'unix shell programming' in one line. B

Question 2

Which of the following is not true regarding the command $ nohup cat *.let | nohup sort >f1 &

Accepted Answer

A)  the process would die if the user logs out before the command's execution is over
B)  if the user logs out the output of sort would be dtored in a file nohup.out
C)  it is optional to give nohup before sort
D)  this background process is also known as a deamon process A

Question 3

If the user has read a news item he cannot read it again because of creation of the file

Accepted Answer

A)  _news_time
B)  news.time
C)  .news.time
D)  .news_time D

Question 4

Which of the following assignments is illegal

Accepted Answer

A)  a='ls'
B)  b='ls -l'
C)  c='1972'
D)  d='who | grepaal'

Question 5

Which of following commands do not belong to multiple file editing commands

Accepted Answer

A)  :n!
B)  :q!
C)  :rnew!
D)  all the above

Question 6

.mailrc is the file

Accepted Answer

A)  which stores the incoming mail
B)  which is used to type the mail to be sent
C)  which is invoked when the mail command is executed
D)  which permits you to customize the vi environment

Question 7

To read the stale news the option available is

Accepted Answer

A)  news -a
B)  delete the file /usr/news
C)  delete the file _news.time
D)  delete the file .news_time

Question 8

The incoming mail of user with the login name aa12 is stored in the file

Accepted Answer

A)  /usr/spool/mail/aa12
B)  /usr/aa12/mbox
C)  /spool/mail/aa12
D)  /usr/aa12/.mbox

Question 9

For a person to receive messages he should have his terminal set to a parameter which will allow him receive messages.The command to set this parameter is

Accepted Answer

A)  message -on
B)  msg -o
C)  mesg -y
D)  message-y

Question 10

Which of the following is not true

Accepted Answer

A)  the at command permits you to receive messages only by mail
B)  a person's login name appears in the file at.allow if he is not allowed to use the at command
C)  both are false
D)  both are true

Question 11

To see the last access time of various files in a file system the command is

Accepted Answer

A)  is-iu
B)  is-i
C)  is-acc
D)  is-mt

Question 12

The message of the day is stored in a file called

Accepted Answer

A)  /etc/profile
B)  /etc/motv
C)  .profile
D)  autoexec.bat

Question 13

To ascertain what are the contents of the file in your the system the best way would be

Accepted Answer

A)  do a cat command on each file and find its contents
B)  use the command cat*
C)  use the command file*
D)  none of the above

Question 14

The escape sequence \033[4m is used to

Accepted Answer

A)  underlying characters
B)  mark them as bold
C)  display them in reverse video
D)  none of the above

Question 15

The command that unix offers to a user to find out whether he can send messages to a particular terminal are

Accepted Answer

A)  finger and who
B)  finger -mesg and who -t
C)  finger -i and who -t
D)  finger -i and who -t.

Question 16

When we are executing a shell script the shell acts as

Accepted Answer

A)  an interpreter
B)  a compiler
C)  an operating system
D)  none of the above

Question 17

The shell metacharacter $# represents

Accepted Answer

A)  total number of arguments supplied to the shell script
B)  total number of files in the current directory
C)  total number of users who have logged in
D)  total number of processes running in the background

Question 18

Which of these is not a command of Unix related with DOS

Accepted Answer

A)  dosdir a:proj
B)  doscopy trial a:/
C)  doscp/home/proj/prg a:/
D)  dosls

Question 19

A null variable a can be created using

Accepted Answer

A)  a=
B)  a=''
C)  a=""
D)  all the above

Question 20

The command cal j 1997 would give the output as

Accepted Answer

A)  the calendar of jan, june and july 1997
B)  only calendar of jan 1997
C)  an error
D)  none of the above

Exam 2: Unix Commands and Functions: Part A