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Friday, April 30, 2010

"copy" Command

Allows the user to copy one or more files to an alternate location. The copy command is an Internal Command and is available in All Versions of MS-DOS, Windows 95, Windows 98, Windows ME, Windows NT, Windows 2000, Windows XP, Windows Vista and Windows 7.
Syntax: copy [switches] [source file] [destination]
Swithes
  • Source: Specifies the file or files to be copied.
  • Destination: Specifies the directory and/or filename for the new file(s).
  • /A: Indicates an ASCII text file.
  • /B: Indicates a binary file.
  • /D: Allow the destination file to be created decrypted.
  • /V: Verifies that new files are written correctly.
  • /N: Uses short filename, if available, when copying a file with a non-8dot3 name.
  • /Y: Suppresses prompting to confirm you want to overwrite an existing destination file.
  • /-Y: Causes prompting to confirm you want to overwrite an existing destination file.
  • /Z: Copies networked files in restartable mode.
The switch /Y may be preset in the COPYCMD environment variable. This may be overridden with /-Y on the command line.

To append files, specify a single file for destination, but multiple files for source (using wildcards or file1+file2+file3 format).

Examples
  • copy *.* a: Copy all files in the current directory to the floppy disk drive. 
  • copy autoexec.bat c:\windows: Copy the autoexec.bat, usually found at root, and copy it into the windows directory; the autoexec.bat can be substituted for any file(s). 
  • copy win.ini c:\windows /y: Copy the win.ini file in the current directory to the windows directory. Because this file already exists in the windows directory it normally would prompt if you wish to overwrite the file. However, with the /y switch you will not receive any prompt. 
  • copy myfile1.txt+myfile2.txt: Copy the contents in myfile2.txt and combines it with the contents in myfile1.txt. 
  • copy con test.txt: Finally, a user can create a file using the copy con command as shown above, which creates the test.txt file. Once the above command has been typed in, a user could type in whatever he or she wishes. When you have completed creating the file, you can save and exit the file by pressing CTRL+Z, which would create ^Z, and then press enter. An easier way to view and edit files in MS-DOS would be to use the edit command.

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