1. C++ Null Type
2. Devnull Computer Hacking

Such devices do not typically exist on a machine, but if they do, you can install a null driver. Additionally, the system installs null drivers for devices that do not have a function driver, if they are capable of executing in raw mode. To specify a null driver in an INF file, use entries like the following. Apache won't start.error: Warning: DocumentRoot /dev/null does not exist - how do I correct this? I ran /scripts/easyapache and /scripts/rebuildhttpdconf Nothing works httpdconfigtest Warning: DocumentRoot /dev/null does not exist Syntax OK BytesLog. The C library function sizet strlen(const char.str) computes the length of the string str up to, but not including the terminating null character.

What is the equivalent of /dev/null in Windows?

I think you want NUL, at least within a command prompt or batch files.

For example:

doesn’t create a file.

C++ Null Type

(I believe the same is true if you try to create a file programmatically, but I haven’t tried it.)

In PowerShell, you want $null:

Devnull Computer Hacking

According to this message on the GCC mailing list, you can use the file “nul” instead of /dev/null:

(Credits to Danny for this code; copy-pasted from his message.)

You can also use this special “nul” file through redirection.

Jon Skeet is correct. Here is the Nul Device Driver page in the Windows Embedded docs (i have no idea why its not somewhere else…) HEre is another

NUL in windows seems actully a virtual path in any folder.
Just like .., . in any filesystem.

use any folder followed with NUL will work

ex :

have same effect as /dev/null in linux

test on windows 7, 64 bit

NUL works programmatically as well. E.g. the following:

works as expected without creating a file. (MSVC++ 12.0)

You have to use start and $NUL for this in Windows PowerShell :

type in this command assuming mySum is name of your application and 510 are command line arguments you are sending.

start .mySum 5 10 > $NUL 2>&1

The start command will start a detached process, a similar effect to &. The /B option prevents start from opening a new terminal window if the program you are running is a console application. and NUL is Windows’ equivalent of /dev/null. The 2>&1 at the end will redirect stderr to stdout, which will all go to NUL.

Tags: windows