You use the command cassi to start a batch initiator or batch printer SEP from the command line. Before you use cassi to start a batch initiator or batch printer SEP, you must already have started the enterprise server using the command casstart.
For a full definition of cassi see the topic cassi (JCL version).
Here are some examples:
casstart -rjcldemo cassi -bABC -rjcldemo
This starts a batch initiator SEP for the classes A, B and C on the enterprise server JCLDEMO.
casstart -rjcldemo cassi -pA -q"HP LaserJet 4L" -rjcldemo
This starts a batch printer SEP for the class A on the enterprise server JCLDEMO using the printer defined on your machine as "HP LaserJet 4L".
casstart -rJCLDEMO cassi -pA -q"HP LaserJet 4L" -rjcldemo -zsampprnx -a
This is as above, with the differences that the SEP is started for debug and the printer exit SAMPPRNX is installed.