UNIX

UNIX

1.Command used to display name of path in prompt is Ans: ls

2. Which directory contains the directory and blocks special files in unix ? Ans: etc

3. mv command will change Ans: i-node no

4. Which of the following metacharacters holds their special status within double quotes?

?

*

$

&

Ans: $ &

5. Which is not a file stream opened automatically in a unix? Ans:Std terminal

6. which command is used to interactively delete files?

7. wc command when used with arguments will?

Ans: wait for user to type in as i/p and displays count for that i/p

8. cat x?  Ans : read from file x

9. which of these commands is not a filter?

1 sort

2 grep

3 cal

4 cut

Ans : cal

10. cd will return the exit status as

Options:

1for success

1for failure

 0for failure

none            

 Ans:none(doubt)

11.Which of the followinng unix command will not take the user student5 to this personal home directory?

1 cd

2 cd/~

3 cd ~

4 cd~ student5                optn2 (not sure check it)

12. COMMANDS TO FIND ALL PROCESSES RUNNING ALONG colonel process  Ans: ps-ef

13. the open mode of a file can combine two or more parameters by using ?
a. bitwise or
b. bitwise and
c. both of the above
d. open mode cant combine two parameters

Ans:

14. unix command to display the names of all users have currently logged in
a. who
b.who am i
c.whoami
d.su

Ans:who am I

15. Used to indicate mark elememt is deprecated and no longer used..

 Ans: @deprecated

16. ecursive listing of all

opn;4ls-r 4IS-R 4IS-a 4ls-F               

Ans: 4IS-R