Unix
Which command is used to change protection mode of files starting with the string emp and ending with 1,2, or 3?

chmod 222 emp?
chmod u+r ??? emp
chmod u+x emp[1-3]
chmod 777 emp*

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Unix
The [line number G] key allows you

to move cursor right by one position
to move cursor down by one line
to move cursor left by one position
to move cursor to the beginning of the line specified by the number
None of these

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