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TEST33.BAT
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DOS Batch File
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1991-12-07
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991b
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29 lines
echo off
rem This is a demonstration batch by Prof. Timo Salmi Sat 7-Dec-91
rem It shows how to test within a batch files if the MsDos version
rem is 3.3 or later. The reason for this demonstration is that you
rem might wish to have differences in your batch depending on which
rem MsDos version is available. For example the call command was not
rem available until version 3.3.
rem If none of the 3.3, 4. or .5 is found then tmpfind.$$$ will be
rem empty.
ver | find "3.3" > tmpfind.$$$
ver | find "4." >> tmpfind.$$$
ver | find "5." >> tmpfind.$$$
rem If tmpfind.$$$ is empty (0 bytes) copying it will produce
rem nothing.
copy tmpfind.$$$ tmpfind1.$$$ > nul
del tmpfind.$$$
rem We tests whether tmpfind1$$$ exitst. This we are indirectly
rem testing whether 3.3, 4. or .5 was found.
if exist tmpfind1.$$$ echo MsDos version is at least 3.3
if not exist tmpfind1.$$$ echo MsDos version is earlier than 3.3
if exist tmpfind1.$$$ del tmpfind1.$$$
echo on