Unix
The first set of the three permissions (rw) pertains to the owner of the file, indicating that the owner has

executable permission only
None of these
both read and executable permissions.
write and executable permissions
both read and write permissions

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Unix
The special shell variable $* is used

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

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