README.md

IAS CHANGES TO BRU


Here is a summary of the changes to BRU in this submission.

1. The disk can be mounted normally - device control functions need
not be specified. Backup and restore operations can be performed
with the disk online. Files open for non-shared write will be
ignored in a backup operation.

2. Different UIC's can be specified between tape and disk, for
example:

BRU/REWIND/BACKUP:XYZ MM0:[*,50] DR2:[100,100]

will put all tape files in the backup set XYZ with an ending UIC
number of 50 on DR2:[100,100].

NOTE: If a UIC is specified on the output device only, BRU will
look only for that UIC on the input device, e.g.,

BRU/REWIND MM0: DR1:[200,200]

will only look for [200,200] files on the tape.

3. The directory (DIR) and display (DIS) options can output to a file
directly by following the DIR/DIS switch with :filename. If only
the colon (:) is specified, the default filename is BRU.DSP.
Output to a file will also contain the creation date of the
file(s).

4. The initialization option (INIT switch) has been removed. If
restoring an entire disk, it should be separately initialized by
INI prior to running BRU. This change removes the risk of a user
restoring a single file or two from inadvertently wiping out a
disk. It also allows backup/restore operations for virtual disks
(DV) or any other disk with a name not in the DEC dictionary.

5. Files returned to disk will retain their original creation date
and time, but the revision date and time will be when the file was
returned to disk.