Which of the following command addresses all users who are currently hooked on ?

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Which of the following command can be used to rename a file in UNIX ?

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What command do you use to delete a file ?

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In OSI network architecture, the dialogue control and token management are responsible of________________?

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Which command is used with vi editor scroll half page backward ?

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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 B. mesg C. write D. grep...