"on" Command Disabled

Due to a security problem with the "on" command, it is being disabled
until further notice on all RISC/System 6000 sites in the Information
Systems Cluster.

All users who use scripts with the "on" command, should change their
scripts to use commands such as "rsh" or other network based commands
(e.g., rup, ruptime, rusers, etc.).  Some of these commands will require
the use of a .rhosts file, please be sure to only use sites you have
accounts on and your own login ID.

When the problem with "on" is fixed, the command will again be
re-enabled.  Sorry for any inconvenience this may cause.