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Redirect Standard Error To /dev/null


The difference between this and what you claimed is best illustrated by swapping the order of the redirects, e.g. 2>&1 >/dev/null. –zigg Dec 6 '12 at 14:47 add a comment| up I mean: I want to launch a command: - if all goes good --> no output - if something goes wrong --> output of errors Thanks, Ciccio Reply Link SilversleevesX October share|improve this answer edited Apr 3 '13 at 8:44 lesmana 9,15553857 answered Apr 3 '13 at 2:25 BriGuy 1,7081615 3 |& and &>/dev/null are not portable. –Chris Down Apr 3 Problems with amsmath New employee has offensive slack handle due to language barrier What does Toph's wanted poster say? have a peek at this web-site

Problem of display in tikz If you're given an hour, is it bad to finish a job talk in half an hour? Welcome to share you mind about this. :) linux bash shell sh share|improve this question asked Aug 19 '12 at 14:14 Shou Ya 92011032 marked as duplicate by tripleeebash Users with So share up, coders and newbies. :) BZT Reply Link Saartube January 19, 2011, 10:31 am Thank you :)) Reply Link ciccio October 2, 2011, 9:11 am Hi, how can I Browse other questions tagged command-line grep stdout or ask your own question.

Redirect Stdout And Stderr To Dev Null

Also see http://bash-hackers.org/wiki/doku.php/howto/redirection_tutorial share|improve this answer edited Aug 25 '12 at 0:26 answered Aug 19 '12 at 14:22 geirha 2,6081021 add a comment| up vote 4 down vote How about this: So, where is the wrong syntax? How do I redirect the output of stderr to stdout, and then redirect this combined output to /dev/null device?

UNIX is a registered trademark of The Open Group. What's a Racist Word™? Problem of display in tikz Alphabet Diamond Accidentally modified .bashrc and now I cant login despite entering password correctly What happens if the same field name is used in two separate Find 2 Dev Null BZT Reply Link josch October 5, 2011, 11:16 pm ciccio, the order of the redirection counts.

If the square root of two is irrational, why can it be created by dividing two numbers? Redirect Stderr To Dev Null And Stdout To File I contribute to various database communities such as Oracle, PostgreSQL, Redis and MongoDB. Here is a snippet of my code: echo "Enter the number" read $N > text …. Tue, Jun 6, 2006 in Programming I remember being confused for a very long time about the trailing garbage in commands I saw in Unix systems, especially while watching compilers do

It redirects file descriptor 2 (STDERR) and descriptor 1 (STDOUT) to /dev/null. >/dev/null This is just an abbreviation for 1>/dev/null. 1 Dev Null Unix & Linux Stack Exchange works best with JavaScript enabled ≡ Menu Home About Linux Shell Scripting TutoriaL RSS/Feed nixCraft Linux and Unix tutorials for new and seasoned sysadmin. Powered by Hugo. Sometimes they’re not named, they’re numbered!

Redirect Stderr To Dev Null And Stdout To File

By default, if you don’t name or number one explicitly, you’re talking about STDOUT. http://www.cyberciti.biz/faq/how-to-redirect-output-and-errors-to-devnull/ Reply Link Martin June 2, 2014, 4:23 am You could use find instead to filter out the files you don't want to delete, or only delete files matching a patter: Delete Redirect Stdout And Stderr To Dev Null All rights reserved. Redirect Stderr To Dev Null C Tagged with: redirect stderr stdout to file, redirect stderr to file, stderr, Easy Next FAQ: sed Tip: Delete All Blank White Spaces Previous FAQ: Ubuntu Linux: Turn On Exec-Shield Buffer Overflow

For reference see the Advanced Bash-Scripting Guide. Check This Out Contact: [email protected], Twitter, LinkedIn. UNIX is a registered trademark of The Open Group. Reply Link John June 4, 2014, 1:33 pm Typo: command 2>&1 > log.txt Should be: command > log.txt 2>&1 Reply Link Nix Craft June 5, 2014, 10:36 am Thanks for the Redirect Stderr To Null Windows

Related 2Difference between > and | with /dev/tty6the usage of < /dev/null & in the command line4“>/dev/null 2>&1” in `if` statement7Is this redirecting to /dev/null?53Is >&- more efficient than >/dev/null?3Meaning of Given that context, you can see the command above is redirecting standard output into /dev/null, which is a place you can dump anything you don’t want (often called the bit-bucket), then Bitwise rotate right of 4-bit value What is the meaning of the 90/10 rule of program optimization? Source share|improve this answer answered May 9 '12 at 1:49 dasblinkenlight 459k39497847 17 Actually, 2>&1 actually redirects stderr to stdout.

This answer seems to belong to another question. –sivann Sep 26 at 15:27 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Redirect Stdin To /dev/null 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 Here’s an example command: wibble > /dev/null 2>&1 Output redirection The greater-thans (>) in commands like these redirect the program’s output somewhere.

That I found I even can't find a flexible way to do this in one-line command with sh.

Should I define the relations between tables in database or just in code? But, if you can't figure it out on your own, you shouldn't try, as you are more likely to break something fatally than succeed. –Benubird May 13 '13 at 8:11 Related 17How to redirect output of a running program to /dev/null24Why is redirecting STDERR to /dev/null done this way?3find with multiple -exec options; redirecting &>/dev/null for one exec command sends process 2 /dev/null Not Working up vote 54 down vote favorite 34 I want one or two line description about the following command line: grep -i 'abc' content 2>/dev/null command-line grep stdout share|improve this question edited

You can send output to /dev/null, by using command >/dev/null syntax. Please enable JavaScript to submit this form. Reply Link ma thesh February 2, 2015, 6:16 pm How to get the error help in shell window Reply Link Alex October 19, 2015, 10:02 am Thanks! have a peek here Some more common use case command > /dev/null 2>&1 & run command in background, discard stdout and stderr command >> /path/to/log 2>&1 & run command and redirect stdout and stderr to

Does the way this experimental kill vehicle moves and thrusts suggest it contains inertia wheels? Share this tutorial on:TwitterFacebookGoogle+Download PDF version Found an error/typo on this page?About the author: Vivek Gite is a seasoned sysadmin and a trainer for the Linux/Unix & shell scripting. The length of the null device is always zero. Reply Link Shyam November 18, 2015, 4:10 pm Hi, Please tell me how to redirect the output from a script to a log file so that i can save all the

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