> I don't know what LD_PRELOAD does to affect the backgrounding,

It's very harmful.
For example I must do "LD_PRELOAD=;export LD_PRELOAD"
during installing CPAN module.
Unless I fail on make after "perl Makefile.PL".

> did you try fork and exec

No I don't like to do it if possible.

> and if necessary reset LD_PRELOAD in

I tested by:
use Env;
delete $ENV{LD_PRELOAD};
in testexec1.pl and it's good, but when I systemed
the script using DBD::Oracle, I got message:

"You must install a Solaris patch to run this version of the Java runtime.
Please see the README and release notes for more information.
Exiting."

So this method seem to be bad...

Hirosi Taguti
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