When using the JBoss EAP 5.1.0 ISO installer (RHEL5.5-JBEAP-5-20110106.0-x86_64-disc1-ftp.iso) from the link [1] for the JBoss Application Platform (v 5) for 5Server x86_64 channel, the twiddle commands does not give any output.
[1] https://rhn.redhat.com/rhn/software/channel/downloads/Download.do?cid=9938