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1994-02-15
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5KB
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112 lines
(C) Copyright 1988-1994 by Alan J. Avery, Springfield, Illinois
ALL RIGHTS RESERVED
======================================================================
This file explains the DOS environment variables that ELFTREE recognizes
and how to activate them. If you will be using one or more of them each
time you start up ELFTREE, we strongly suggest you put the commands that
activate them in your AUTOEXEC.BAT file.
Note: In the examples that follow, we assume that ELFTREE was installed
in the directory C:\TREE.
======================================================================
If you have DOS 2.X, add this:
SET ELFTREEPATH = C:\TREE
======================================================================
Add C:\TREE to the end of your PATH variable, like this:
PATH C:\DOS;C:\TREE;
======================================================================
To tell ELFTREE which drives to include when using the Find or Space
commands, use the ETDRIVES variable (shown for drives [C] through [G]):
SET ETDRIVES=CDEFG
======================================================================
If you have Validate Tree (Customize/Switches menu) set to Yes, you may
want the tree for selected disks to not be validated. For example, if
your machine has drives A, B, C, D and F, and drive D: is a remote drive
on another computer (which takes a long time to grow a tree), here's how
to limit validation to just the other drives:
SET ETVALTREE=ABCF
======================================================================
REMOVABLE MEDIA or RAM DISKS
======================================================================
If your computer has removable disk drives (such as cartridges, optical
media or floppy diskettes) or a RAM disk, you may want ELFTREE to store
the tree maps for one or more of them in the root directory of those
drives. The advantage is faster access to the disks once the tree maps
have been built. Here's how to do this for drives [E] and [F]:
SET ETMAP=ef
If you want the tree maps stored with all of the other tree maps, use
UPPER CASE letters instead of lower case. For example:
SET ETMAP=EF
This is recommended only for drives where you seldom change disks.
Upper and lower case can be combined, so you can say:
SET ETMAP=eF
Note: If a drive is removable, tree maps will ONLY be stored if they are
included in this list. Thus, if A: and B: are floppy drives, tree maps
will otherwise NOT be stored for them at all. If a non-removable drive
appears in this list (such as a RAM disk), tree maps are stored where you
have indicated.
======================================================================
CD-ROM DRIVES
======================================================================
CD-ROM drives present a special challenge because you cannot store tree maps
on them, and growing the tree can take a LONG time. ELFTREE automatically
recognizes which drives are CDROM (conforming to the MSCDEX standard) and
will store a tree map for each unique platter where the other tree maps
are stored.
For all other drives for which you want this service, or to indicate that
you don't want this service for a CDROM, you must define an environment
variable called ETMAPCDR. Here's how to do it for drive G:
SET ETMAPCDR=G (Note: Use G to activate it, and g to deactivate it)
For these disks, ELFTREE builds a 'key' for each platter that it scans, and
uses this key to tell it what file the tree map is stored in. So, when you
insert a disk for which a tree map has already been built, ELFTREE will
determine which file has the tree map and load it immediately.
Notes: If a disk letter is used in both the ETMAP and ETMAPCDR environment
variables, the ETMAP one takes precedence. Up to 1000 tree maps can be
tracked automatically, and these use names like ETMAPCDR.###, where ###
is a number from 000 to 999.
======================================================================
ADVANCED FEATURES - NETWORKS, RAM DISKS and MULTITASKERS
======================================================================
When using ELFTREE on a network by several people, each one will need a place
to store menus, tree maps, etc. This is specified with the ETFIND variable.
Use a unique directory for each person using it, like this:
SET ETFIND=C:\TREE\MARY
To let MARY run ELFTREE from a RAM disk, just copy ET.EXE, ELFTREE.CHL and
ETT.BAT to her RAM disk, change her PATH to include it and set ETFIND to
C:\TREE\MARY.
To run ELFTREE in a multitasking environment, where more than one copy of
it may be active at the same time, the above remarks apply, of course.
In addition, the environment variable ETIDENT can be used as a reminder
to you of which copy is active. For example, if using ELFTREE under OS/2
in three windows (called DOS1, DOS2 and DOS3), you may find it helpful to:
SET ETIDENT=DOS1 when starting partition 1.
SET ETIDENT=DOS2 when starting partition 2.
SET ETIDENT=DOS3 when starting partition 3.
ELFTREE will display whatever ETIDENT is set to on the Current Path line of
the File and Directory Tree screens.
======================================================================