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Linux sudo Configuration

Q. Can you tell me how to configure sudo to provide access to end users? How do I allow to run programs with the security privileges of another user using sudo?
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Bash Script Flags

Can you explain me common UNIX / Linux / Mac OS X / BSD bash shell script flags?
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HowTo: Find Out Router Mac Address

How do I display or find out the MAC address for my small home / business router?
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