$ echo $RANDOM
8035
$ echo $RANDOM
797
$ PERL_HASH_SEED=$RANDOM PERL_HASH_SEED_DEBUG=1 perl -e 'my %a=0..299; print $_ for values %a' | md5sum
HASH_SEED = 26815
c1a75ab8e3bf1ff6c07b01025a1219e9  -
$ PERL_HASH_SEED=$RANDOM PERL_HASH_SEED_DEBUG=1 perl -e 'my %a=0..299; print $_ for values %a' | md5sum
HASH_SEED = 30449
c1a75ab8e3bf1ff6c07b01025a1219e9  -