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MCQ

Q.

Which of the following signs is used to back up over typing errors in vi?

A

@

B

#

C

$

D

!

E

None of the above

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Which of the following commands is used to update access and modification times of a file?

A

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wc

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touch

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None of the above

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Which of the following commands is used to have a two-way communication with any person who is currently logged in?

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Which option is used with rm command to make the command prompt the user with each filename and a ?, before acting on it

A

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

A

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E

None of the above

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

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None of the above

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