# start the ipc
$h = start \@cmd, \$in, \$out ;

# send login info, keep reading until shell prompt
$in = "$password\n" ;
pump $h until $out =~ /BRU Server >/i ;

# do what we need to do
$in = "backup -some -params\n" ;
pump $h until $out =~ /BRU Server >/i ;
print "Output:\n$output";

# and, we're done here
$in = "exit\n" ;
pump $h while length $in;
finish $h or die "oh crap: $?";