Online Computer Science Test - Unix Test

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Total number of questions: 20.
Time allotted: 30 minutes.
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While working with mail command, which command is used to save mail in a separate file?

None of the above

[#]

Which of the following command addresses all users who are currently hooked on?

write

mail

wall

mesg

None of the above

[#]

Which of the following keys is used to move the cursor to the end of the paragraph.

}

{

None of the above

[#]

Which command is used to remove the read permission of the file 'note' from both the group and others?

chmod go+r note

chmod go+rw note

chmod go-x note

chmod go-r note

None of the above

[#]

Which symbol will be used with grep command to match the pattern pat at the beginning of a line?

^pat

$pat

pat$

pat^

None of the above

[#]

Which of the following commands is used to display the directory attributes rather than its contents?

ls -l -d

ls -l

ls -x

ls -F

None of the above

[#]

If you are to use [Control-c] as the interrupt key instead of [Del], then you will have to use

tty ^c

stty intr \^c

stty echoe

stty echo \^a

None of the above

[#]

Which command is used to remove a file?

remove

del

None of the above

[#]

Which of the following options will be used to display number of blocks used by a file?

-c

-i

-d

-s

None of the above

[#]

10.

Which command is used to display a file contents in octal form?

oct

None of the above

[#]

11.

Which of the following commands is used to get directory one level up?

cd ..

cd/

chdir

None of the above

[#]

12.

Which commands is used to assign executable permission to all of the files named "letter"?

chmod ugo+r letter

chmod ugo+rw letter

chmod u+x letter

chmod ugo+x letter

None of the above

[#]

13.

Which command is used to sort the lines of data in a file in alphabetical order?

sort

sort -r

None of the above

[#]

14.

Which option will be used with disk free command to include the total amount of disk space in the file system?

-t

-tt

-4

-i

None of the above

[#]

15.

Which is the earliest and most widely used shell that came with the UNIX system?

C shell

Korn shell

Bourne shell

Smith shell

None of the above

[#]

16.

Which command will be used with vi editor to replace single character under cursor with any number of characters?

None of the above

[#]

17.

Which command is used to save the standard output in a file, as well as display it on the terminal?

cat

grep

tee

None of the above

[#]

18.

Which command will be used with vi editor to append text at end of line?

None of the above

[#]

19.

Which command is used with vi editor to move the cursor to the left?

None of the above

[#]

20.

Which of are following internal commands is used in mail to forward mail to user in user-list?

r user-list

m user-list

d user-list

e user-list

None of the above

[#]

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Online Computer Science Test - Unix Test

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