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Redirect Error To Null Bash


Just something to keep in mind. What have folks' experiences been with the different commands and bash/sh versions when trying it this way? Could IOT Botnets be Stopped by Static IP addressing the Devices? good explanation, I'd like to make a function on C that redirects STDIN and SDTOUT to an script, how can I do that, I mean, the exist a library's on C http://supercgis.com/stderr-to/redirect-error-to-null-in-bash.html

It redirects file descriptor 2 (STDERR) and descriptor 1 (STDOUT) to /dev/null. >/dev/null This is just an abbreviation for 1>/dev/null. The OP doesn't said nothing about this... Connected to ( ------------------------------------- How can I get rid of "Connection closed by foreign host." ? share|improve this answer edited Sep 27 '13 at 12:23 answered Sep 26 '13 at 8:31 sivann 28226 2 There is absolutely nothing wrong if you use 2>/dev/null.

Redirect Stdout And Stderr To Dev Null

Exactly what i wanted! Functions 2>&- The general form of this one is M>&-, where "M" is a file descriptor number. Reply Link Security: Are you a robot or human? A.

Equivalent for "Crowd" in the context of machines Problem of display in tikz Some part of my plot has been hiding How is this red/blue effect created? 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 Reply Link Frank June 30, 2009, 5:15 pm need a command in my bash script to remove some (not all) of the contents of directory2. Redirect Stderr To File Does Anna know what a ball is?

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 But the problem is, if the files are not there (in $yesterday_logs $today_logs), I get error messages. Cancel reply Leave a Comment Name Email Comment You can use these HTML tags and attributes:

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What is way to eat rice with hands in front of westerners such that it doesn't appear to be yucky? しっているはずです is over complicated? Find 2 Dev Null The length of the null device is always zero. Reply Link Hugues November 12, 2013, 4:33 pm l often do the following and I do not want an error (just a 0 length file) You get a valid output if Reply Link iamfrankenstein June 12, 2014, 8:35 pm I really love: "command2>&1 | tee logfile.txt" because tee log's everything and prints to stdout .

Redirect Stderr To Dev Null And Stdout To File

How do you say "enchufado" in English? this contact form Thankyou! Redirect Stdout And Stderr To Dev Null Here is the script: #!/bin/bash today=`TZ='Asia/Tel_Aviv' date +"%Y-%m-%d"` yesterday=`TZ='Asia/Tel_Aviv' date +"%Y-%m-%d" -d "yesterday"` ... Redirect Stderr To Dev Null C 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!

All rights reserved. Check This Out It's free: ©2000-2016 nixCraft. Hot Network Questions How does a migratory species advance past the Stone Age? 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 Redirect Stderr To Null Windows

Working in a bash environment, in the following example, how do I direct the error message that putting in an invalid flag (-j for example) would normally produce to dev/null? Notation: SPACE(n) vs SPACE(O(n)) What to do with my pre-teen daughter who has been out of control since a severe accident? How is being able to break into any linux machine through grub2 secure? Source But so there's no performance difference or some such with 2>&- vs 2>/dev/null (other than that some "poorly" written programs don't undrestand 2>&- correctly)? –Det Apr 6 '13 at 14:38 1

I want to redirect them to /dev/null from the script, and not from the line calling the script - I want this script to never show error messages about files which Redirect Stdin To /dev/null If the square root of two is irrational, why can it be created by dividing two numbers? BASH Shell: How To Redirect stderr To stdout ( redirect stderr to a File ) by Vivek Gite on March 12, 2008 last updated March 12, 2008 in BASH Shell, Linux,

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Proving an equality in set theory Logical && statement with null validation What happens if the same field name is used in two separate inherited data templates? So in your case you should use grep -q OK 2>/dev/null. The time now is 04:10 PM. - Contact Us - UNIX & Linux - unix commands, linux commands, linux server, linux ubuntu, shell script, linux distros. - Advertising - Top 1 Dev Null Tagged with: error message, I/O redirection, keyboard, Linux, log program, program error, redirect stderr stdout to file, redirect stderr to file, redirect stdout to file, redirection, standard error, stderr, stdin, stdout,

Follow him on Twitter. This will close output for whichever file descriptor is referenced, i.e. "M". 2>/dev/null The general form of this one is M>/dev/null, where "M" is a file descriptor number. Draw an hourglass Problems with amsmath Are there any ways to speed up blender compositor? have a peek here Password Home Search Forums Register Forum RulesMan PagesUnix Commands Linux Commands FAQ Members Today's Posts Shell Programming and Scripting BSD, Linux, and UNIX shell scripting Post awk, bash, csh, ksh,

New employee has offensive slack handle due to language barrier Does dropping a Coursera course look bad in a PhD application to the university offering the course? (Seemingly) simple trigonometry problem while getopts "abcd" opt do case "$opt" in i) a etc ;; r) b etc ;; f) c etc ;; v) d etc ;; \?) direct actual error message to dev/null It still outputs that -j is an invalid option Sniper Pixie View Public Profile Find all posts by Sniper Pixie #4 03-07-2006 matrixmadhan Technorati Master Join Date: The file in /dev/ is just for convenience. –Chris Down May 14 '13 at 3:51 @ChrisDown you're right, /dev/stderr is just a link.

Would it be ok to eat rice using spoon in front of Westerners? (Seemingly) simple trigonometry problem Should I define the relations between tables in database or just in code? Draw an hourglass (Seemingly) simple trigonometry problem Disproving Euler proposition by brute force in C If the square root of two is irrational, why can it be created by dividing two while getopts "abcd" opt do case "$opt" in i) a etc ;; r) b etc ;; f) c etc ;; v) d etc ;; \?) direct actual error message to dev/null This will redirect the file descriptor, "M", to /dev/null. 2>&1 The general form of this one is M>&N, where "M" & "N" are file descriptor numbers.

It can be used to suppress any output. Does Anna know what a ball is? What is way to eat rice with hands in front of westerners such that it doesn't appear to be yucky? Reusable Matrix block types Code Golf Golf Golf Why do composite foreign keys need a separate unique constraint?

share|improve this answer edited Aug 9 '15 at 16:30 answered Aug 9 '15 at 15:13 Alfe 18.5k73370 Hi @Alfe, grep -q OK is not enough because I grep each To apply it to a scope, append it like this: for i in …; do …; done 2>/dev/null, i. It was added in Bash 4. &>/dev/null This is just an abbreviation for >/dev/null 2>&1.