Unix
Which command is used to copy a file wb with the same name from the programs directory to the misc directory?

None of these
copy a:programs/wb b:misc/wb
tar programs/wb misc/wb
cp programs/wb misc
copy programs/wb misc/wb

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Unix
The special shell variable $* is used

to name the command being executed
to process number of the current shell
None of these
to list the positional parameters
to exit status of ast command executed.

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