BACKUP		Backup/Restore files or random access devices

  SYNTAX
	BACKUP[/OPTION] dev:[filnam.typ] dev:[filnam.typ]

  SEMANTICS
	The BACKUP command transfers files or volume images to or 
	from multi-volume backup 'savesets'.  The Backup Utility 
	Program (BUP), is useful for making quick archive copies 
	of RT-11 files and device volumes, and employs various data 
	verification techniques to ensure data integrity.
	
	BACKUP can also display a directory showing the contents of 
	device volumes and savesets that it produces.  
	
	
	BACKUP inp:files out:[ssname]
		saves file(s) to a saveset on output volume(s)
	
	BACKUP/DEVICE inp: out:[ssname]	
		saves a device image to a saveset on output volume(s)
	
	BACKUP/RESTORE inp:[ssname/SAVESET,]files out:
		restores file(s) from a device image saveset on inp:
	
	BACKUP/RESTORE/FILE inp:ssname[/SAVESET] out:[filnam.ext]
		restores saveset to one file on out:
	
	BACKUP/RESTORE/DEVICE inp:ssname out:
		restores a device from a device image saveset on inp:
	
	BACKUP/RESTORE/DEVICE/FILE inp:[ssname/SAVESET,]files out:
		restores file(s) from a device image saveset on inp:
	
	BACKUP/DIRECTORY inp:[ssname]
		creates a listing of saveset sections on the input volume
	
	BACKUP/DIRECTORY inp:[ssname]/SAVESET[,files]
		creates a listing of files within a saveset
	
	BACKUP inp:files out:logdsk/SUBSET
		creates a logical disk file (logdsk.DSK) and saves 
		the specified input file(s) inside it
	
	BACKUP/RESTORE inp:logdsk/SUBSET[,files] out:
		retrieves file(s) from a logical disk file 
	
	BACKUP/DIRECTORY inp:logdsk/SUBSET[,files]
		creates a listing of files in a logical disk file
	
  OPTIONS
   DEVICE
	BACKUP or RESTORE an entire device image.  When used with /RESTORE
	the output volume is initialized
   DIRECTORY
	Creates a backup directory listing.  The listing is displayed on 
	your terminal, unless /OUTPUT or /PRINTER is specified.
   FILE
	Use only with /RESTORE.  BACKUP/RESTORE/FILE restores an entire
	backup saveset to exactly one disk file.  BACKUP/RESTORE/DEVICE/FILE 
	restores one or more files from a BACKUP saveset.  It is equivalent 
	to BACKUP/RESTORE.  
   INITIALIZE
	Use with backup operation to initialize an output volume
   LOG
	Informs of beginning of backup, restore, or verify operation.
	Also displays names of files processed. (default)
   NOLOG
	Prevents log messages from being printed on the screen
   NOQUERY
	Inhibits most confirmation (Are you sure?) prompts.  Allows
	using BACKUP from indirect command files.
   NOREWIND
	Prevents initial rewind of magtape before backup or restore
	operation.  Valid with magtape only.
   NOSCAN
	Omits bad-block scan of output disks during backup operations
   ONLY:n
	Limits the number of saveset sections to be displayed during
	a /DIRECTORY operation on magtape
   OUTPUT:filspc
	Use with /DIRECTORY to send output to a file or device
   PRINTER
	Use with /DIRECTORY to send output to LP:
   QUERY
	Asks for confirmation before performing an operation (default)
   RESTORE
	Restores previously backed up files or volume created by
	the BACKUP Utility 
   REWIND
	Causes rewind of tape backup volume before operation begins
	(default)
   SAVESET
	Designates a backup saveset for a /RESTORE or /DIRECTORY 
	operation.  The default saveset on disk backups is BACKUP.BUP.
	The default saveset on magtapes is the first saveset on the
	tape.  When /SAVESET is specified with /DIRECTORY, a list of 
	files contained within the saveset is produced.
   SCAN
	Performs scan for bad blocks of each output disk volume before
	backup	(default)
   SUBSET
	Use this switch in place of /SAVESET to indicate that the backup 
	is an RT-11 logical disk file.  Not valid with magtape.
   SYSTEM
	Permits wildcard restore of .SYS files to the SY: device
   VERIFY[:ONLY]
	Provides verification of data transferred to or from a device.
	BACKUP/RESTORE/VERIFY:ONLY performs a comparison of the contents 
	of a backup saveset with an original disk volume without actually 
	restoring it.
  EXAMPLES
	BACKUP/DEVICE/INITIALIZE/NOSCAN/VERIFY SY: DU2:
	
	BACKUP/INITIALIZE/VERIFY/NOQUERY DU0:*.* MU0:JUL10A
	BACKUP/NOREWIND/VERIFY/NOQUERY DU1:*.* MU0:JUL10B
	BACKUP/DIRECTORY MU0:
	BACKUP/DIRECTORY/PRINTER MU0:JUL10A/SAVESET
	BACKUP/RESTORE MU0:JUL10A/SAVESET,*.FOR DU2:
	BACKUP/RESTORE/FILE MU0:JUL10A.BUP SY:JUL10A.DSK
	
	BACKUP/VERIFY *.FOR,*.MAC,*.SAV SY:STUFF.DSK/SUBSET
	BACKUP/DIRECTORY SY:STUFF.DSK/SUBSET