Yeaas, and as usual there are a million permutations. Some simple ones leap to mind.

system ( "echo yes | /usr/bin/querrelous" );
[download]

which obviously will only work for the one 'yes'or'no'

open ( SYS "|/usr/bin/querrelous" );
print SYS 'yes' , $/;
[download]

For anything more complicated maybe you should think about IPC::Open2 for talking and listening to your process.

submersible_toaster
bashing buttons
[download]