Usage: OPER <name> PASSWORD <password>

This command will change an operator's password to whatever is sent in the last part of the command. Make sure you never give out passwords other than to their proper owners.

/as oper web password seqret4mula

Operator passwords should be changed immediately if they are ever revealed to anyone other than the person whose password it is. They should also be changed if the operator is having difficulty remembering the current one. A good password should be very difficult to guess, but not that difficult to remember so that it does not need to be written down.