|copy path to file\file name and enter.|
So for example if the file is named abcd.txt and is located on the D: dirve in a sub folder named SUB1 and that subfolder is another subfolder named SUB2 and that is in a folder named SUB on the root directory then:
and enter will copy that file to the current directory showing in the prompt.
If the file has more than 8 characters in its name--for example say it's named abcdefghij.txt--then it's easiest to enclose the everything in quotes as dos/command prompt commands use 8.3 file format--8 character for the file name and 3 for the extension. So in that case you'd type in: