Unix Questions

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71.

Which of the following commands is used to absolutely assign all permissions to the owner, read and write permissions to the group and only executable permission to the others of the file note?

A

chmod 761 note

B

chmod 671 note

C

chmod 167 note

D

chmod 4=rwx, g=rw note

E

None of the above

Correct Answer: A

None.

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72.

The chmod ugo+rw note command can be represented in octal notation as

A

chmod 555 note

B

chmod 666 note

C

chmod 444 note

D

chmod 333 note

E

None of the above

Correct Answer: B

None.

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73.

Which of the following commands is used to display the filenames in multiple columns with indication of directories and executable file?

A

ls -F -x

B

ls -l

C

ls ~ x

D

Ip

E

None of the above

Correct Answer: A

None.

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74.

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

A

/

B

?

C

//

D

??

E

None of the above

Correct Answer: A

None.

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75.

Which of the following commands is used to assign executable permission to the owner of the file named "note"?

A

chmod g+x note

B

chmod u+w note

C

chmod u+x note

D

chmod ugo+x note

E

None of the above

Correct Answer: C

None.

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76.

The command to count the number of files in the current directory by using pipes, is

A

ls | wc

B

ls -l | wc -l

C

ls | wc -w

D

ls | ws -c

E

None of the above

Correct Answer: C

None.

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77.

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

A

cd

B

cd ..

C

cd/

D

chdir

E

None of the above

Correct Answer: B

None.

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78.

Which of the following commands is used to count the total number of lines, words, and characters contained in a file.

A

count p

B

wc

C

wcount

D

countw

E

None of the above

Correct Answer: B

None.

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79.

Which command is used to delete all files in the current directory as well as all files and sub-directories in its subdirectories?

A

rm *

B

rm -r *

C

rm all

D

rm *.*

E

None of the above

Correct Answer: B

None.

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80.

Which of the following commands is used to change the working directory?

A

cd

B

changedir

C

chdir

D

cdir

E

None of the above

Correct Answer: A

None.

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