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MERGE COMMAND
19. 1 -- Use
1~
will be changed.
The
rile
names <name
2/
th~ough
<name n>
a~e
optional.
I
f
the
y
a
l'
e s
p
e
c
i
fie
d
I
the
y
m
us
t
b
e o.p the sa mer
i
1
e forma
t
and have similar allocation and space
comp~ession
attributes
as
<name
l~o
In addition,
their names cannot be the same as
that of <dname/ unless <dname/ is the same as <name
1/.
I f
file
names
<name 2/ through <name
n~
are not
speci~ied,
the
MERGE command performs the same function as the COpy command.
That is,
MERGE <name l>,<dname>
is identical to the command line
assuming that <name
1~
is not the same as <dname>.
Onl~
rour
t~pes
of riles can be processed
by
~ne
MERGE
command.
The files specified
by
<name
i>
must
have
one
of
the following formats:
File format as
File
format
sho4lJn by OIR
o
2
3
5
User-defined
Memory-image
Binary record
ASCII record
Memory-image
files
can
be
merged together.
The
file
<dname>,
however, cannot exist
in
such
cases
because
MERGE
must ensure that the destination file is allocated contiguous
space to accommodate the memory-images of all (name
i~
files.
If
<dname>
already
ex ists,
MERGE
cannot
ensure
such
allocation.
For all other file formats
that
<name
i )
can
assume,
<dname:>
can
already
exist.
In
such cases
where
<dname> is different from <name 1:> and already exists in
the
d ire c to,..
y
(
and noll W
II
0
P
t ion
0
nco mma n d 1
i
n e ),
the me s sag
e
<dname> EX ISTS.
OVERWRITE?
will
be
displayed.
The
operator must respond with a "V" if
MERGE is to perform the
me~ge
operation
Any other
response
will terminate the MERGE command and return control to MDOS.
19.
1.
1 Merg ing non-memory-image fi les
If
the
files
specified
by
<name
i>
use,..-defined format, ·the binary record format,
are
all of the
or
the
ASCII
rec or
d
format,
then
the destination
~ile
<dname:> will be a
,.--~
.
.~
j
Page
19-02
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