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1985-06-03
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20-Dec-83 21:39:26
Fm: Jeff Garbers 73105,330
To: all
Hi-- while browsing through the MS-DOS manual for our new Tandy 2000 (yes,
we'll get Crosstalk going on it soon), we noticed a very handy feature in batch
processing-- and I'll be darned, but it works on the PC! You can refer to
variables which have been SET in your environment simply by placing the
variable name in between percent signs. For example, if your batch file
DOIT.BAT has
masm %workfile%;
and you did a SET WORKFILE=BONZO.ASM, the batch file expands to "masm
BONZO.ASM;". Extremely handy, especially considering that applications can
change the values of environment variables. I was complaining that MS-DOS
couldn't do that sort of thing from the start-- seemed too natural-- and now we
find it was in there all along.
As with any other undocumented feature, there may very well be bugs in this.
We only tried it long enough to see that it worked for this simple example.
Try it out and let's see if there are any problems that need to be worried
about. /// JPG