Special File Names Used by Windows
Q
What are special file names used by Windows?
✍: FYIcenter.com
A
Windows used a number of special file names referring to special resources
in the system:
- CON - Referring to the console: keyboard and screen. Reading from CON is reading from the keyboard. Writing to CON is writing to the screen.
- PRN - Referring to the printer for writing output only.
- AUX - Referring to the auxiliary device for reading and writing.
- NUL - Referring to null device. Reading from NUL gets nothing, like an empty file. Writing to NUL goes nowhere, data will be lost.
- COM1, COM2, ..., COM9 - Referring to serial port 1, 2, ..., 9 for reading and writing.
- LPT1, LPT2, ..., LPT9 - Referring to serial parallel 1, 2, ..., 9 for reading and writing.
Note that you should never use these special file names to name your own files.
⇒ Use NUL to Sink Program Output
2021-04-15, ∼2499🔥, 0💬
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