Next, run: test.bat 2> NUL and you should see: C:\>test.bat This text goes to Standard Output This text goes to the Console C:\>_ We redirected Standard Error to the NUL device, So the interpretation of the parenthesis and redirection is delayed, or deferred. It can be used to suppress any output. CMD Syntax TYPE - Display the contents of one or more text files Q245031 - Error when using the | pipe symbol Successive redirections explained (1>&3 ) - Stack Overflow Equivalent his comment is here
How do I redirect the output of stderr to stdout, and then redirect this combined output to /dev/null device? more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed share|improve this answer answered Jun 11 '15 at 10:57 UmayKnowMe 1113 add a comment| up vote -3 down vote This grep command has a wrong syntax, It should be something like It's probably something specific to your usage scenario.
Still, a lot of processes write to that instead of fd/2, which you could also redirect. For example, this syntax works, but would fail if the second or subsequent (piped) lines were indented with a space: @Echo Off echo abc def |^ find "abc" |^ find "def"> Is 8:00 AM an unreasonable time to meet with my graduate students and post-doc? How can I create a face with a rounded edge?
I mean: I want to launch a command: - if all goes good --> no output - if something goes wrong --> output of errorsThanks, Ciccio Reply Link SilversleevesX October 2, Why? Batch File Redirect To Null I do not get any ether when mining Were slings used for throwing hand grenades? Batch File Pipe Append The result will be an empty logfile.
My experience with those 2 compared to bash's redirection operators, is that bash is superior in that regard. http://onlinetvsoftware.net/batch-file/batch-file-error-2.php asked 6 years ago viewed 31942 times active 2 years ago Related 9How to redirect output to a text file and the console (cmd) window at the same time?2*Why* does using Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Batch File Pipe Input To Program
It is said Console cannot be redirected, and I believe that's true. Batch File Redirect Stderr OR read more like this:Linux Redirect Error Output To FileUnix and Linux: Redirect Error Output To null CommandLinux / Unix Find Command: Avoid Permission Denied MessagesBASH Shell: How To Redirect stderr Now make a typo again: EHCO Hello world 2>NUL What did you get?
This file now contains the stdout and stderr output of your command. The batch file would look like this: command > logfile and the command line would be: START batchfile Some "best practices" when using redirection in batch files: Use >filename.txt 2>&1 to Note however, that a space between an ECHO command and a > will be redirected too. Batch File Redirect Stderr And Stdout Adopt A Jet/Book Did Donald Trump call Alicia Machado "Miss Piggy" and "Miss Housekeeping"?
But the next one is new: test.bat > NUL 2>&1 and you should see: C:\>test.bat This text goes to the Console C:\>_ This time we redirected both Standard Output and Standard How does Gandalf get informed of Bilbo's 111st birthday party? So following two are the same command:command 2>&1 1>/dev/nullANDcommand 1>/dev/null 2>&1 Reply Link Anonymous August 25, 2012, 7:33 pmHello,The order is important :$ ls non_existing_folder 1>/dev/null 2>&1(no output)$ ls non_existing_folder 2>&1 check over here Why don't most major game engines use gifs for animated textures?