User`s guide

SET CLI
• If you have not enabled the UCF interpreter, the DCL command interpreter is
the first interpreter to look at a command (if it is enabled).
If the DCL interpreter translates the command, the monitor executes it; if the
interpreter cannot translate the command, the monitor passes the command to
the CCL interpreter (if it is enabled).
• The CCL command interpreter looks at a command only if the DCL interpreter
cannot translate it.
If the CCL interpreter translates the command, the monitor executes it; if the
interpreter cannot translate the command, the monitor passes the command to
the UCL interpreter (if it is enabled).
• The UCL command interpreter is always passed a command last when no other
interpreter can translate the command. This means that UCL commands never
slow down the interpretation of DCL or CCL commands.
If the UCL interpreter translates the command, the monitor executes it; if the
interpreter cannot translate the command, the UCL interpreter displays an error
message.
Using the UCL and UCF Interpreters
The DCL and CCL interpreters are always present in the operating system, but to
use the UCL and UCF interpreters, you must follow the procedures described in the
Defining Your Own Commands chapter in the Introduction to RT–11.
Displaying the Status of Your Command-Line Interpreters
You can display the status of CLI by issuing the SHOW CONFIGURATION
command. A line in the display shows the status of all CLI options.
Enabling/Disabling Interpreters
Once you include the UCL and UCF interpreters in your operating system, you can
then use the SET CLI command to enable or disable them. You might want to
enable or disable one or another interpreter to adapt your system to a particular set
of commands and to remove the system overhead for the interpreter(s) you do not
need.
Making a SET CLI Command Automatic
The SET CLI command affects your running operating system’s memory only; it
does not affect the image of the operating system on file on your system device. This
means that when you reboot your operating system, the command-line interpreter
reverts to its defaults.
To make a SET CLI command automatic (that is, active when you reboot), you can
make it the last part of your system startup procedure in your STRTxx.COM file.
220 RT–11 Command Descriptions