11. Which of the following commands is used to display the directory attributes rather than its contents?
A. ls -1 -d
B. ls -1
C. ls -x
D. ls -F
E. None of the above
Ans: Option A
12. Which of the following files will displayed by this command cat *ch*
A. patch
B. catch
C. .ch
D. All of the above
E. None of the above
Ans: Option D
13. The Octal number to be given alogn with chmod command to make a file readable, writable and executable to the owner, readable and executable to group and others is:
A. 000
B. 755
C. 744
D. 555
E. None of the above
Ans: Option B
14. If you are to use [Control-c] as the interrupt key instead of [Del], then you will have to use
A. tty ^c
B. stty intr \^c
C. stty echoe
D. stty echo \^a
E. None of the above
Ans: Option B
15. Which of the following is not a communication command.
A. write
B. mesg
C. mail
D. grep
E. None of the above
Ans: Option D
16. Which of the following keys is used to move the cursor to the end of the paragraph.
A. }
B. {
C. |
D. $
E. None of the above
Ans: Option A
17. Which command is used to concatenate all files beginning with the string 'emp' and followed by a non-numeric characters?
A. cat emp[!0-9]
B. more [emp][!0-9]
C. cat emp[x-z]
D. cat emp[a-z]
E. None of the above
Ans: Option A
18. The command which transcribes the standard input to the standard output and also makes a copy of the same in a file is
A. tee
B. tr
C. sort
D. grep
E. None of the above
Ans: Option B
19. Which command is used to remove a file?
A. remove
B. rm
C. mv
D. del
E. None of the above
Ans: Option B
20. Which symbol is used to separate more than one command in the same command line?
A. $
B. #
C. :
D. ;
E. None of the above
Ans: Option D
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