Help for this page
my %param = ( srcdir => '/home/me/perl/', destdir => '/root/perl/', ... system /bin/mv $param{tarball} $param{destdir} and die $!; cd $param{destdir}; system /usr/bin/tar $param{tarball} -zxvf and dir $!
my %info = ( ' script' => "$0", ' executable' => "$^X $]", ... for (keys %info) { print $_ $info{$key}, "\n"; }