I believe the simplest method would be to put the defaults in an array and the ENV-vars as well, then you could use grep or array::compare or something like that to find out differences, like
my @defaults = (b1,..,b10);
my @envs = (a1,..,a10);
print "errors" if grep { $envs[$_] !~ $defaults[$_] } 0..9; this is untested and maybe not the most elegant, but I must confess I have not entirely understood your problem...
Hope it helps...

In reply to Re^3: Environment variable by erazor
in thread Environment variable by rohit2007

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