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

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

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Unix
The ls -l command tells

the name of the group owner of the file
None of these
who the owner of the file is
how large the file is and when the file was last modified.
All of these

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