Reply Link Security: Are you a robot or human? I contribute to various database communities such as Oracle, PostgreSQL, Redis and MongoDB. 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 I'm Baron Schwartz, the founder and CEO of VividCortex.
I know it's not recommended, but for someone like myself, with scripts they either run daily or don't run for months and then go through a spate of executing them two Privacy - Terms of Service - Questions or Comments ≡ Menu Home About Linux Shell Scripting TutoriaL RSS/Feed nixCraft Linux and Unix tutorials for new and seasoned sysadmin. share|improve this answer edited Aug 19 '12 at 14:38 answered Aug 19 '12 at 14:25 Zaar Hai 1,90831727 add a comment| up vote -2 down vote Well, that's because you can't. See also rc for better designed operators. –Stéphane Chazelas Oct 24 '14 at 9:26 Update: about the performance issue, that's also confirmed here: unix.stackexchange.com/questions/163955/… –Det Apr 16 at 14:24
The length of the null device is always zero. If you're given an hour, is it bad to finish a job talk in half an hour? Standard input usually comes from the keyboard if it’s an interactive program, or from another program if it’s processing the other program’s output. Find 2 Dev Null What is the meaning of the 90/10 rule of program optimization?
Does the Many Worlds interpretation of quantum mechanics necessarily imply every world exist? Redirect Stderr To Dev Null And Stdout To File Should non-native speakers get extra time to compose exam answers? And why grep -ri? –Radu Rădeanu Sep 26 '13 at 9:02 By the way, he could also be looking for the string /support/security/bulletins/ in the file called content =). http://unix.stackexchange.com/questions/70963/difference-between-2-2-dev-null-dev-null-and-dev-null-21 Problem of display in tikz Save a JPG without a background Is the ability to finish a wizard early a good idea?
My experience with those 2 compared to bash's redirection operators, is that bash is superior in that regard. 1 Dev Null A little note for seeing this things: with the less command you can view both stdout (which will remain on the buffer) and the stderr that will be printed on the I was searching how resolve this problem, and your solution work perfect for me! When a girl mentions her girlfriend, does she mean it like lesbian girlfriend?
So following two are the same command: command 2>&1 1>/dev/null AND command 1>/dev/null 2>&1 Reply Link Anonymous August 25, 2012, 7:33 pm Hello, The order is important : $ ls non_existing_folder That way redirects stderr to the stdout, but then only the original stdout to /dev/null—stderr will still be output. Redirect Stdout And Stderr To Dev Null Why is international first class much more expensive than international economy class? Redirect Stderr To Dev Null C Modo di dire per esprimere "parlare senza tabù" Limit Notation. "Guard the sense doors"- What does this mean, and what is it's application?
All rights reserved. How to explain the concept of test automation to a team that only knows manual testing? Save a JPG without a background Disproving Euler proposition by brute force in C Does the local network need to be hacked first for IoT devices to be accesible? Source shell posix io-redirection share|improve this question edited Apr 17 '13 at 13:02 artagnon 2,09411422 asked May 9 '12 at 1:46 resting 1,94072545 1 FYI: A shorter way of silencing a
asked 3 years ago viewed 126720 times active 1 year ago Blog Stack Overflow Podcast #92 - The Guerilla Guide to Interviewing Linked 3 Get current ssh session's originating IP without 2 /dev/null Not Working The script does NOT run as root, which works because it removes the correct files but not the root-level stuff in directory2 (that I don't want to remove). For example, this will still output an error message: ps -ef | grep | grep ps > /dev/null 2>&1 Reply Link nixCraft February 2, 2015, 8:14 pm Try: (ps -ef |
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 asked 3 years ago viewed 36699 times active 3 years ago Blog Stack Overflow Podcast #92 - The Guerilla Guide to Interviewing Linked 0 How can I ignore errors in the Cancel reply Leave a Comment Name Email Comment You can use these HTML tags and attributes:
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 It gets more complicated from there - which is why I left a comment instead of an answer :). –Benubird May 14 '13 at 8:11 add a comment| 1 Answer 1 What to do with my pre-teen daughter who has been out of control since a severe accident? have a peek here command 2>&1 | tee out.txt command opt opt2 foo 2>&1 | tee out.txt Reply Link Nix Craft June 5, 2014, 10:53 am Your command will send output to both screen and
Does the local network need to be hacked first for IoT devices to be accesible? Something like: (your_command) 1>/dev/null should leave errors alone, that is, going to stout where you can see them. Hot Network Questions Could IOT Botnets be Stopped by Static IP addressing the Devices? Draw an hourglass Manually modify lists for survival analysis Do I need to turn off camera before switching auto-focus on/off?
UbuntuCommunityAsk!DeveloperDesignDiscourseHardwareInsightsJujuShopMore ›AppsHelpForumLaunchpadMAASCanonical current community chat Ask Ubuntu Ask Ubuntu Meta your communities Sign up or log in to customize your list. asked 4 years ago viewed 38235 times active 4 years ago Blog Stack Overflow Podcast #92 - The Guerilla Guide to Interviewing Get the weekly newsletter! 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 How do you say "enchufado" in English?
Does the way this experimental kill vehicle moves and thrusts suggest it contains inertia wheels? If those answers do not fully address your question, please ask a new question. 3 Did you try ./script.sh 2>&1 > /dev/null ? –cnicutar Aug 19 '12 at 14:21 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 STDOUT) a number 2 = standard error (i.e.