                                   BACKUP
                  Backs up files from one disk to another
                             See also <RESTORE>

COMMAND TYPE: External                  VERSION: 2.0 and up

USE:  BACKUP d:[path][filename] d:[/S][/M][/A][/D:mm-dd-yy]
      [/T:hh:mm:ss][/F:size] [/L[:[d:[path]filename]]]

d:\path\filename specifies the source drive (the drive that contains
   the files that you want to back up).

The second d: specifies the destination drive (the drive to back up
the files to).

/S includes all subdirectories in the backup.
/M backs up files that have been modified since the last backup (files
   with the archive bit set)
/A backs up additional files to a diskette with back up files already
   on it.  Without this option, all files on the backup diskette will
   be destroyed.
/D:mm-dd-yy backs up files that have been modified since a specific
   date.

NOTE: The following options /T, /F, and /L are new to DOS 3.3.  Do not
try them with earlier versions.

/T:hh:mm:ss backs up files that have been modified on or after the
   specified time on the date specified.
/F:size formats the target diskette if it is not already formatted.
   "size" indicates the type of disc for the formatting program. The
   following may be accepted: 160,180,320,360,1200 (kb - 5.25" discs)
   or 720,1440 (kb - 3.5"discs)
/L creates a log.  If a file name is not specified, the default is
   BACKUP.LOG, and the file is stored in the root directory of the
   source drive.  If a log file exists, the information is appended to
   the end of that file.  The first record of the file contains:
        The date of the backup    The time of the backup
   Subsequent records contain:
        Diskette number of the backed up file. Full path and file name
        of each backed up file.

Files created using the <BACKUP> command must be <RESTORE>d to be useful.

EXAMPLE: BACKUP C:\*.* A:/S

This example will back up all files (in all subdirectories) on drive
C: to drive A:.

NOTES: Do not use on drives which have been <ASSIGN>ed, <SUBST>ituted or
<JOIN>ed.
