="M1/D1/Y1" backs up files with modify dates equal to the
specified date
= "-M1/D1/Y1" backs up files with modify dates before
or
equal to the specified date
= "M1/01/Y1-" backs up files with modify dates after or
equal to the specified date
MPW cannot be abbreviated.
When you specify QUERY
=YES, the system questions you for each
file before it is copied. Answer by pressing:
CYJ
to copy the file.
(]J
or
(ENTER)
to bypass the file and move on to the next one.
m to copy the file, turn off the Query function, and
automatically copy all remaining files.
After you type the BACKUP command, TRSDOS automatically
performs one of the three types of backups: "mirror image," "backup
by class," and "backup reconstruct." The difference between the three
is of technical interest and is discussed in "General Information."
NOTE: A backup by class and backup reconstruct require two disk
drives.
For information on backing up "backup limited" diskettes, see
Appendix
M,
"Backup Limited Diskettes."
Backups
With
the (X)
Parameter
When you specify the (X) parameter, you do not have to have a
system disk
in
Drive 0 when you back up a disk. TRSDOS prompts
you to insert the proper disks
in
the proper drive.
Examples
BACKUP
$:Ql
: 1
(SYS
tIN!,!)
(ENTER)
examines all files on the disk
in
Drive 0 and copies all files to Drive
1,
because all files match the $ partspec. The partspec causes a backup
by class.
NOTE: You can use this command to force a backup by class
in
situations where a mirror image would normally be performed. For
example, it reduces fragmentation of files on the source disk by
copying them in a more contiguous manner onto a newly formatted
destination disk.
BACKUP :
Ql;
: 1 (MOD ,QUERY= YES
,MPW=
II
SECRET
")
(ENTER)
copies all visible files from Drive 0 to Drive 1 that have been modified
(written to) since the last backup.
It
questions you for each file before
it is copied, showing the file's mod date and flag. The (MPW
=)
parameter states the Master Password, so the system does not
prompt you for
it.
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