open my $source,'-|',"bash /tmp/wrapper.sh" or die "$!";
my $dump= do { local $/; <$source>};
my $VAR1;
eval $dump;
print $VAR1->{MONK}; #> jfroebe
####
lanx@nc10-ubuntu:/tmp$ cat wrapper.sh
. /tmp/src.sh
perl -MData::Dumper -e' print Dumper \%ENV'
lanx@nc10-ubuntu:/tmp$ cat src.sh
export MONK=jfroebe
lanx@nc10-ubuntu:/tmp$
##
##
my $bashcode=<<'_bash_';
. /tmp/src.sh;
perl -MData::Dumper -e "print Dumper \%ENV";
_bash_
open my $source, '-|', qq{bash -c '$bashcode'} or die "$!";
my $dump= do { local $/; <$source>};
my $VAR1;
eval $dump;
print $VAR1->{MONK}; #> jfroebe
##
##
my $bashcode=<<'__bash__';
. /tmp/src.sh;
perl -MData::Dumper -e 'print Dumper \%ENV';
__bash__
my $VAR1;
eval qx{bash -c "$bashcode"};
print $VAR1->{MONK}; #> jfroebe