> I have no idea where "is equal to" crept in myself, so I'll keep out of
the
> semantics. Doing deltree G: and deltree C: (you get the idea) both result
in
> an empty drive!
I just added it to try and show the difference. Being a mathematician and
programmer, the meaning changes depending on which side of the sign you're
talking about. e.g. x = 12 would be 'assign the value 12 to variable x'
while '12 = x' would mean 'assign the value in variable x to the value 12'.
The point I was making (and also someone else), was that if your C: is my
G:, then your typing 'DELTREE C:' will delete everything on my drive G:. If
my G: is your C:, then when I type 'DELTREE G:' I'm deleting the stuff from
your drive.
> My point was that they ARE actually equal (the same device) if G: is
mapped
> (what a horrid concept to begin with) to C:, or vice versa. It's important
> to know this lest one be tempted to free up all those extra copies of
stuff
> on G: (true horrors heard in the network admin classroom).
There equal all right. However, which one is real and which one is just
pointing at the other? Another example might be JOIN and SUBST: you have a
partition D:, which you want to appear in C:\DRIVED. JOIN D: C:\DRIVED will
acheive this, and C:\DRIVED now appears to contain a heap of files. The
files are on D:, and appear also in C:\DRIVED. It'd be inaccurate to say D:
is C:\DRIVED, because the files are on D:. If you had done SUBST D:
C:\DRIVED instead, then drive D: is a pointer to C:\DRIVED, so 'D: is
C:\DRIVED' would be correct.
> (NOTE: I have NO IDEA if deltree will zap a drive like this or not. I do
not
> intend to find out!)
It will. 'DELTREE /Y C:\' will do something like this:
Deleting C:\DOS...
Deleting C:\TEMP...
Deleting C:\GEMAPPS...
Deleting C:\BUILD...
Deleting C:\WINDOWS... (hurray!)
Deleting C:\AUTOEXEC.BAT...
Deleting C:\CONFIG.SYS...
Deleting C:\IO.SYS...
Deleting C:\MSDOS.SYS...
And I've seen it do that. By accident. Which is *not* fun at all. :)
Regards,
Ben A L Jemmett
(http://web.ukonline.co.uk/ben.jemmett, http://www.deltasoft.com)
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