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Q.

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

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Which of the following special shell variables is used to process number of the last background job?

A

$!

B

$#

C

$0

D

$*

E

None of the above

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The cat command is used to

A

capture a file

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display a file

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print a file

D

copy a file

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None of the above

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Which command is used to display the device name of the terminal you are using?

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ls

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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?

A

mail

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