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While reviewing someone's bash script, I ran into following command. My question is why "." is required for copying a file from one location to another? To me it seems unnecessary.

cp source/foo.xml destinaton/.
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    It is not required. – Tigger May 17 '17 at 3:41
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    A better question would be: Why does cp require two arguments when copy a file from another directory to current working directory? – hschou May 17 '17 at 6:26
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The dot (.) is not required.

You can use the following syntax as well:

cp source/foo.xml destination/

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