How are you checking "in the system"? putenv does not make a global change to your system settings, instead it changes the environment locally. For example, on Unix (it would work the same on Windows, but I don't know a lot about the Windows shell),
[outer] $ FOO=1 [outer] $ echo $FOO 1 [outer] $ racket [racket] > (putenv "FOO" "2") #t [racket] > (getenv "FOO") "2" [racket] > (system "/bin/sh") [inner] $ echo $FOO 2 [inner] $ exit > (exit 0) [outer] $ echo $FOO 1 The only real use of putenv is with system, when you want the Racket program to run another program. Jay On Mon, Oct 22, 2012 at 7:38 AM, <herak...@gmx.de> wrote: > Hello friends, > > I try to change my env variables in windows 7. getenv works fine, but when I > change a specific env variable it returns #t but in the system there are no > changes... > > > Yours, > ____________________ > Racket Users list: > http://lists.racket-lang.org/users -- Jay McCarthy <j...@cs.byu.edu> Assistant Professor / Brigham Young University http://faculty.cs.byu.edu/~jay "The glory of God is Intelligence" - D&C 93 ____________________ Racket Users list: http://lists.racket-lang.org/users
