Re: Set/reset DOS environment variable
- Posted by Arlie Codina <arlie.codina at USA.NET> Feb 12, 1999
- 707 views
At 07:47 AM 2/12/99 -0400, you wrote: >At 04:57 a.m. 12-02-99 -0500, you wrote: >>How do you programatically set/reset DOS environment variable? >> >>I tried the following but didn't work: >> >>system( "SET MYVAR=02/08/1999", 2 ) >>i = system_exec( "COMMAND /C SET MYVAR=02/08/1999", 2 ) >> >>Can anyone help me on this. >> >>Arlie > >It won't work because the envoirment (the one use set on your autoexec.bat) >is different from the new shell you created. > >Why you need this? I have a 7-8 pages long C source that can do what you >need, but before typing and translating it to Euphoria I must be sure it's >the only alternative you need. > >Regards, > Daniel Berstein > daber at pair.com > Hi Daniel, I want to use this for IPC (inter-process communication) so that a program can tell if an instance of itself is already running. Sort of TSR under windows 95. I thought that setting DOS env. var. was the simplest way to do it. Regards, Arlie Codina