Suppressing Passwords Entered on the Command Line
CP can be set to reject LOGON or LINK commands that have the password entered on the same line as the command. Rejecting these commands prevents passwords from being displayed or printed without masking. (Masking a password means overprinting the password so it cannot be read.)
This capability is also available to virtual machines that issue LINK commands by DIAGNOSE code X'08'. For a description of DIAGNOSE code X'08', see z/VM: CP Programming Services.
To request password suppression, specify it as an option on the FEATURES statement in the system configuration file. Once requested, password suppression is always on; an operator cannot turn it off. See FEATURES Statement for information on how to use the FEATURES PASWORDS_ON_CMDS operand.