# yum install perl-IO-Tty
# apt-get install libio-pty-perl
# rpm -Uvh perl-IO-Tty-1.07-1.aix5.1.ppc.rpm
cd /home/stor2rrd/stor2rrd . etc/stor2rrd.cfg $PERL -MIO::Pty -e ';'When it prints error like "Can't locate IO/Pty.pm in @INC" then something is wrong with installation.