A user’s ability to execute commands in a green-screen environment is controlled by the limit capabilities (LMTCPB) parameter on their profile. Although without exit programs to extend IBM i security functions, even limited capability users could invoke commands through network interfaces such as FTP.

Does this sound familiar? You recently experienced an “unplanned outage” after an administrator inadvertently issued a PWRDWNSYS command while mentoring a new operator.

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