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Section B:
Command Input
******************************
•
File Search
*
******************************
B.l.S. File Search Procedure
Normally,
files
are searched for only on the current drive and in
the
current user area. This can be very troublesome, as it would be necessa-
ry
to have copies of the programs needed on all drives and in each user
area. Therefore, the file search algorithm of EOS has been extended.
Let us first talk about user areas. If you are in another user area than
user area 0,
none of the commands can be found any longer.
In order to
have
them nevertheless available,
files can be marked with
a
special
attribute,
You already have learned what file attributes are like.
The
attribute
needed here is the
11
SYSTEM
11
attribute.
Files with a
11
SYSTEM
11
attribute
can
be accessed from within any
other
user
area.
Another
advantage:
SYSTEM
files
are not listed in the drive directory
unless
specified
explicitly,
thus enhancing the readability of the
directory
listing.
The
=>
$SET utility serves for setting
and
resetting
file
attributes.
Furthermore,
the
command search has been extended to include more than
one drive. By means of the => $CONFIG utility, you may define up to four
drives which are to be scanned for a command. In its delivery state, EOS
automatically begins the seek sequence on the RAM disk,
then
continues
on the current drive. This may be redefined and extended at will.
It is not necessary for the seek procedure that a disk is in each
drive
specified.
If
there is no data media in a drive to be examined,
it is
skipped automatically.
B.l.6. Multiple Command Lines
You
may
enter more than one command in one command line by
seperating
these commands by quotation marks
11
!
11
,
To get the directory of a
disk,
to erase all .BAK files and to copy the remaining files you may enter
>DIR -P
I
ERA *.BAK
1
$COPY
*·*
B:
The
program $00 is necessary to interpret such multiple command
lines.
It would convert the above example into
>DIR -P
>ERA *.BAK
>$COPY *·* B:
For further details, please refer to the chapter about the program $00.
EOS User
1
s manual
Daeumling & Zimmermann
Page 37
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