Copy files in the Linux terminal: 
To copy a file on a computer with a graphical interface, you usually either drag and drop a file from one window to another window, sometimes using a modifier key. Alternately, you might prefer to right-click on a file icon, select Copy, and then Paste the file icon into another window.
To copy a file in a terminal, you use the cp command, which works exactly like the mv command, except that it duplicates the contents of a file rather than moving them from one location to another.
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