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You can append the device names AUX, CON, PRN, and NUL to the output-file options to direct the output file to the named device. No space is allowed between the option and the device name. Do not append a colon (:) to the device name. The device names and their behavior are shown in the following table.
Device name | Result |
AUX | The listing file is sent to an auxiliary device. |
CON | The listing file is sent to the console. |
PRN | The listing file is sent to a printer. |
NUL | No file is created. |
In the following example, appending PRN to /Fm sends a map file to the printer:
CL /FmPRN HELLO.CPP