Env variable in Windows XP for batch scripting?
I normally shell script in Unix, but I’ve a need to create a batch script in Windows Server 200x (not sure of which).
I need to create log files with the current date.
A bit of poking around led me to the %date% env variable and some substring-type functions on it.
Unfortunately, I am seeing the following behavior at the command line prompt:
C:> set stuff=%date%
C:> echo %stuff%
%date%
The variable %stuff% doesn’t contain the translated date, but, rather, contains the string ‘%date%.
When I put those lines in a cmd file, it works just fine. Even more confusing, when my co-worker tries it on an identically-configured machine, %stuff% has the translated date.
Why would %stuff% not translate interactively for me? Any ideas?
Thanks!
The expansion of %date% by the current date depends on CMD.EXE Command Extensions and Delayed Expansion. In some cases, the expansion occur only in Batch files (not in the command-line), but if Command Extensions are disabled, %date% is always %date%.
Command Extensions are enabled by /E:ON switch in CMD or by several other methods/defaults. You may read the details about this matter in SET /?, CMD /? and SETLOCAL /?.
Regards…
PSP LED 200X 爆閃改裝紅+藍有警察的味道
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