How do you redirect standard error and standard output to a file?

To redirect stderr as well, you have a few choices:

1. Redirect stdout to one file and stderr to another file: command > out 2>error.
2. Redirect stdout to a file ( >out ), and then redirect stderr to stdout ( 2>&1 ): command >out 2>&1.

How do I redirect a null output in Powershell?

Ways to send console output to NULL:

1. Using Out-Null Cmdlet: Hides/discards the output instead of sending it down the pipeline or displaying it.
2. Typecasting to [void] : This is more of a very C#-flavored trick.
3. Redirection to $NULL: Redirecting the output to the Automatic variable $Null.

Can you tail Dev Null?

To answer your question under what circumstances tail -f /dev/null might finish and therefore continue to the next line in something like a shell script: /dev/null (as with everything in Linux) is a file. When executing tail onto any file, the file must be opened using a filedescriptor.

How do I send error to dev Null?

In Unix, how do I redirect error messages to /dev/null? You can send output to /dev/null, by using command >/dev/null syntax. However, this will not work when command will use the standard error (FD # 2). So you need to modify >/dev/null as follows to redirect both output and errors to /dev/null.

Why do I redirect my output to / dev / null?

This is because of using > /dev/null 2>&1 will redirect all your command output (both stdout and stderr) to /dev/null, meaning no outputs are printed to the terminal.

How to redirect standard output, standard error and command line redirection?

So instead, you would redirect the standard error to /dev/null and the operating system will help you disregard all the “garbage”. perl program.pl > nul Would redirect the standard output to the nothingness, and perl program.pl 2> nul would redirect standard error. Unix/Linux/Windows support?

How to redirect shell script to null device?

(Essentially all the output from the command would be redirected to the null device .) without causing the script to crash (kind of like try catch exception handling in programming languages). It’s not quite like a try/catch or anything. It simply silences any sort of output (including error) from the command.

How to redirect standard output in Perl Maven?

null on MS Windows. On MS Windows the counterpart of /dev/null is just plain nul. perl program.pl > nul Would redirect the standard output to the nothingness, and perl program.pl 2> nul would redirect standard error.