temp file not deleted with webmin?

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hello,

I have a "C" program that deletes a temp file under shell and user using
telnet, but noticed that it does not delete the temp file when I run under
webmin.  I have all privledges, the temp is not deleted using a webmin
module to execute the program.  what can possibly be wrong?

The program seems to fully finish, but the temp is not deleted.

Thanks,

Diego