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PathDev
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PATH.DOC
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1988-10-25
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2KB
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60 lines
GENERAL PURPOSE SEARCH PATH DEVICE
----------------------------------
Credits:
Most of the legwork for this beast was already done in the form
of a fine sample dos device by Matt Dillon (his notes are included
in this distribution as they are still relevant). Thanks Matt
Installation:
copy path-handler to the devs: directory
append the Mountlist item to your devs:Mountlist file
*poof* finished.
Usage:
To make it do it's thing, just use path: as if it were a ram
disk. Create a file in path: that contains the list of directorys
you want searched. Say you created a file foo like so:
ram:
dh0:c/
dh0:tool/
df0:c/
df1:c/
The directories have to start in column 1 of the file and be
separated by newlines. They must also be absolute path names
(i.e. they contain a ':') and they must not refer to the path:
device again (to avoid deadlock). Any line which doesn't meet
these criteria is ignored when processing that search path.
Editing your search path is easy, just use your favourite editor.
Once entered the file is ready for use, if you type:
path:foo/more
the system will attempt to open (in order) ram:more, dh0:c/more,
dh0:tool/more, df0:c/more, and df1:c/more. If you then say
assign c: path:foo, then presto you're commands will automatically
be searched for in the right places.
Note that because the path is re-interpreted from the ascii
every time, the df0: and df1: entries are very late binding,
they refer to whatever disk happens to be in the drive
at the time the search happens. If you change disks then the
new disk will be searched, the old disk will not be requested.
If you wish to include a specific volume in the search path then
simply use the volume name and not the device name.
Coming Soon: dir path:foo to list all files in the search path
------------------
Rico Mariani rmariani@watmum.waterloo.edu
Released to the Public Domain