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Gold Medal Software 3
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Gold Medal Software - Volume 3 (Gold Medal) (1994).iso
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SHELLS.DOC
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1991-12-08
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Out of Environment Space
When running a BATch file from a "shell" there may be problems with
"Out of Environment space" since DOS does not usually allocate excess
Environment space to child processes. 4DOS and its alter-ego NDOS
provide a means to ensure that copies of the Environment have
sufficient space available, but COMMAND.COM is very stingy with the
amount of free Environment space it allocates to child processes.
Check the documentation for your shell program to see if it can make
sufficient Environment space available. If you plan on running a
BATch file from a shell and find that "Out of environment space" is a
problem, there are several things that you can try to do.
If COMMAND.COM is your command processor, in order to run your.bat
you can tell your shell to use the command, C:\COMMAND.COM /E:512 /
Cyour.bat. Assuming that COMMAND.COM is in the root directory of the
C: drive, this will allocate 512 bytes of Environment space to your
BATch file. Just adjust the command for the proper location of your
COMMAND.COM and the actual amount of Environment space you will need
with the /E: switch.
If your shell won't cooperate in running COMMAND.COM in this manner,
then you can establish a BATch file to do it for you. Call it
RUNBATCH.BAT and make the first line %COMSPEC% /E:512 /C%1 %2 %3 etc.
Then when you want to run your.bat, tell your shell to execute the
command RUNBATCH your.bat. Follow that with any parameters you need
for your.bat and they will be picked up by the %1 %2 %3 etc.
replaceable parameters in RUNBATCH.BAT.
Another method to ensure that GET has enough Environment space to
store its results is to establish a dummy GET variable before loading
any shells or other programs. The best way would be to do it in your
AUTOEXEC.BAT. Simply insert the command SET GET=xxxxx...xxxx in your
AUTOEXEC.BAT file with enough x's or other characters for the maximum
length input string you are expecting. Then in any BATch file that is
to be run from the shell, before using GET issue the command SET
GET=. This will remove the GET variable from the Environment and
free the space to be reused by GET.