cp (copy)
If you want to move or rename files (instead of copying), please checkout the mv command.
Copying A Single File
This is the simplest cp procedure:
$ cp ~/original_file.txt ~/copied_file.txt
Coping Multiple, Specific Files To A Directory
This can be done with the syntax:
$ cp ~/{file1,file2,file3,file4} ~/destination_folder/
Note that there must be no spaces between the comma-separated files.