MPE CI Programming for 7.5

July 22, 2008
Page 4
hp e3000
strategy
UDCs
• user defined command files (UDCs) - a single file that contains 1 or more
command definitions, separated by a row of asterisks (***)
• features:
• simple way to execute several commands via one command
• allow built-in MPE commands to be overridden
• can be invoked each time the user logs on
• require lock and (read or eXecute) access to the file
• cataloged (defined to the system) for easy viewing and prevention of
accidental deletion -- see SETCATALOG and SHOWCATALOG
commands
• can be defined for each user or account or at the system level
• more difficult to modify since file is usually opened by users