Radio Shack TRS-80 model III Owner's Manual page 27

TRS-80
MODEL
III
DISK
SYSTEM
Using
TRSDOS
Entering a
Command
Whenever
the
trsdos
prompt,
TRSDOS READY
is
displayed,
you
can
type
in
a
command,
which
can be no more
than 63
characters
in
length.
You
must
press CENTER)
to
end
the
line,
trsdos
will then
"accept'' the
command.
For example,
type:
CLS (MM)
trsdos
will clear the Display
and
the
trsdos
ready
prompt
will reappear.
In general, your
commands
will require
more
than one word. For example,
to
kill (delete) a
file
named myname,
you have
to specify the
command
and
the
filename.
KILL MYNAME
CENTER]
tells
trsdos
to find the
file
named myname,
eliminate
it
from
the diskette, and
release the space previously
occupied by
that
file.
Whenever you
type
in
a
line,
trsdos
follows
this
procedure:
1
.
First
it
checks
to see
if
what you've
typed
is
the
name
of
a
trsdos command.
If
it is,
trsdos
executes
it
immediately.
2. If
what you
typed
is
not a
trsdos command,
then
trsdos
will
check
to
see
if
it's
the
name
of
a
program
file
on one
of
the drives.
3.
When
searching
for a
file,
trsdos
looks
first
through Drive
0,
then Drive
1
,
etc.,
unless
you
include an
particular drive
specification with
the
file
name'
—
or specify the
master command
(see
Library Commands).
If
trsdos
finds a specified
user
file,
it
will load and
execute
the
file if
it
is a
program
file.
Otherwise,
you'll get an
error message.
Command
Syntax
Command
syntax
is
a
command's
general form
(like the
grammar
or structure of
an English sentence). The
syntax
tells
how
to
use
keywords
(such
as dir,
list,
create,
etc.)
together with
the
necessary parameters
and
punctuation.
If
you need
help remembering
the
syntax form
of
a
specific
command
while
you're operating trsdos,
type
in:
HELP command
CENTER]
-^,
20