Nul command in windows

The command exit status will always be 0. The POSIX standard mentions that this shell command should only expand command arguments and be used when a command is needed, as in a then condition of an if command, but no actions should be done by the command.

The null command : is very similar to the true command which also always succeeds and returns an exit status 0. The colon command or null command is often compared to the true builtin. While for the most part, you would observe similar behavior, there are some slight differences to be aware of.

First, the true command is a regular builtin while the : colon command is a special builtin according to the POSIX specifications. A special builtin is required to be built into the shell, the regular builtin is not guaranteed to be. So, depending on the shell used and the implementation, : colon command may be faster than true.

Second, any variables assignments specified by a special builtin command, even environment variables, will be persisted after the command executed. We found out that there is a difference in "Start" key, which value was set to 4 for me and 1 for my friend. I'm not sure if setting it to 1 the hard way will fix it, but I have fixed that by downloading default Null settings from here.

I hope it helps you. If it works, spread this solution if you want, just because I saw a lot of requests on it regarding Git for example. Any clues? This thread is locked. You can follow the question or vote as helpful, but you cannot reply to this thread. I have the same question Report abuse. You can remove a route by using the command route delete IP X. X where X. Send an IP route to Null Asset X mask Y. Z metric 1 -p Where X. Peter Mortensen Ove S Ove S 4, 2 2 gold badges 16 16 silver badges 7 7 bronze badges.

Add a comment. Active Oldest Votes. I think you want NUL , at least within a command prompt or batch files.

Improve this answer. Jon Skeet Jon Skeet 1. I just looked at this again, and I retract my original statement. I was doing the write in code, and the error was getting swallowed. I'm deleting it so no one accidentally takes it as the truth. CoDEmanX: That's not my experience. Writing to the console - or even a file - can take a significant chunk of time. I've just tested it with a program writing "Hello there" to stdout times. Redirecting to a file on an SSD took 18 seconds.

Redirecting to NUL took 4 seconds. Not redirecting at all made me give up through a lack of patience after a while