Copies files and directory trees.

XCOPY source [destination] [/A | /M] [/D[:date]] [/P] [/S [/E]] [/W]
                           [/C] [/I] [/Q] [/F] [/L] [/H] [/R] [/T] [/U]
                           [/K] [/N]

 source       Specifies the file(s) to copy.
 destination  Specifies the location and/or name of new files.
 /A           Copies files with the archive attribute set,
              doesn't change the attribute.
 /M           Copies files with the archive attribute set,
              turns off the archive attribute.
 /D:date      Copies files changed on or after the specified date.
              If no date is given, copies only those files whose
              source time is newer than the destination time.
 /P           Prompts you before creating each destination file.
 /S           Copies directories and subdirectories except empty ones.
 /E           Copies directories and subdirectories, including empty ones.
              Same as /S /E. May be used to modify /T.
 /W           Prompts you to press a key before copying.
 /C           Continues copying even if errors occur.
 /I           If destination does not exist and copying more than one file,
              assumes that destination must be a directory.
 /Q           Does not display file names while copying.
 /F           Displays full source and destination file names while copying.
 /L           Displays files that would be copied.
 /H           Copies hidden and system files also.
 /R           Overwrites read-only files.
 /T           Creates directory structure, but does not copy files. Does not
              include empty directories or subdirectories. /T /E includes
              empty directories and subdirectories.
 /U           Updates the files that already exist in destination.
 /K           Copies attributes. Normal Xcopy will reset read-only attributes.
 /Y           Overwrites existing files without prompting.
 /-Y          Prompts you before overwriting existing files.
 /N           Copy using the generated short names.