I assume by 'libraries', you really mean modules, right? Why not? Is there some reason why you cannot simply use

ssh user@host "command1;command2"
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If you want to use perl and you can setup ssh keys so you don't have to enter a password, you could use

open (CHK,"| ssh user@host > /tmp/foo 2>&1") || die "failed";
print CHK "command1";
print CHK "command2";
close CHK;
# process /tmp/foo here
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