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3.4 -- File Appending
Ina
diskette
in
the
destination
drive is assumed to be a
valid
MDOS
diskette.
The rile append process
is
invoked
by
using the Main Option
"All
on the BACKUP command line:
BACKUP : <s-unit/, :<d-unit>iA
Instead
of
the, "BACKUP
FROM
DRIVE <s-unit> TO <d-unit>?"
message normally displayed by BACKUP, the message:
APPEND FROM DRIVE <s-unit) TO <d-unit)?
is shown.
The operator must respond with a
"Y"
if
the
file
append
process is to continue.
Like the file reorganization
process,
the file
append
process
allows
the
operator
to
select
which
files are to be copied.
The messages ror file
selection and the commands to the file selection process
are
explained
in
section
3.3,
File Reorganization, and will not
be
discussed again here.
A,ter all files have been selected;
they
~ill
be
copied
similar
to
the process described in
section
3.3;
however,
the MOOS family of system files is
not
copied.
Since
the destination diskette already contains entries
in its directory, a
possibility
of
Tile
name
duplication
exists.
In
the
event
that one of the selected file names
from the sorted
di~ecto~y
duplicates
a
file
name
in
the
destination
directorYI
the
following
message
will
be
displayed:
<name> - DUPLICATION:
IS IT TO BE COPIED?
The operator must respond with either
an "N"
or
"Y".
The
"Nil
response
will
prevent
the
file
from
being copied'to the
destination
diskette.
Th'e
fly"
response
will
cause
the
prompt:
.
NEW NAME:
to
be
shownJ
to which the operator can respond with the new
name that is to be assigned.
If a valid file name and suffix
are entered, they will be used as the name of the destination
file.
The default suffix
"SA"
will be supplied
if
none
is
explicitly
entered.
If
only a carriage return is given as a
response to the prompt,
then
the
file
on
the
destination
diskette' will
be
deleted (if it is unprotected) berore the
file
f~om
the source diskette is copied
(which
will
retain
its
original
name,
diskette's duplicate
in
this
case>.
If
file. cannot be deleted:
CANNOT DELETE DUPLICATE NAME
the
destination
the message
will be displayed and the
BACKUP
command will be terminated.
The
ny"
and
"Zit
options can
be used
in conJunction
with
Page
03-09
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