Not the answer you're looking for? The time now is 04:26 PM. - Contact Us - UNIX & Linux - unix commands, linux commands, linux server, linux ubuntu, shell script, linux distros. - Advertising - Top I have this command: Code: du -h -c ~ | grep total and when I execute it, it sometimes show errors like : du: cannot read directory `bla': Permission denied and RSS Feed. Source
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Receive Email Notifications? Try the following syntax: ## Thanks http://www.cyberciti.biz/faq/how-to-redirect-output-and-errors-to-devnull/#comment-40252 ## command 1>&- 2>&- ## Note: additional '&' at the end of job to put it in backgrounds ## job 1>&- 2>&- & The short explanation, therefore, is “all output from this command should be shoved into a black hole.” That’s one good way to make a program be really quiet! http://askubuntu.com/questions/350208/what-does-2-dev-null-mean
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. You can, however, do this: exec 2>/dev/null I wouldn't recommend doing this outside of a script. Modo di dire per esprimere "parlare senza tabù" Does using a bonus action end One with Shadows? しっているはずです is over complicated?
Join Date Aug 2008 Beans 47 Redirecting stderr to dev null ?? These three file descriptors (you can think of them as “data pipes”) are often called STDIN, STDOUT, and STDERR. I'm Baron Schwartz, the founder and CEO of VividCortex. Redirect Stderr To Null Windows All rights reserved.
How to explain the concept of test automation to a team that only knows manual testing? Redirect Stderr To Dev Null Bash If i open text in vi i am getting blank lines and i have saved my script as number.sh and done chmod on the script to give it user permissions as 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 =). How is being able to break into any linux machine through grub2 secure?
It's free: ©2000-2016 nixCraft. Find 2 Dev Null How do I store and redirect output from the computer screen to a file on a Linux or Unix-like systems? Cancel reply Leave a Comment Name Email Comment You can use these HTML tags and attributes:
then this would do.. this contact form The program usually prints to standard output, and sometimes prints to standard error. Not the answer you're looking for? Could IOT Botnets be Stopped by Static IP addressing the Devices? Redirect Stderr To Dev Null C
Print some JSON How to draw and store a Zelda-like map in custom game engine? Tagged with: > /dev/null 2>&1, cronjobs, I/O redirection, output error messages, redirect stderr to file, redirect stdout to file, standard error, stderr, Easy Next FAQ: FreeBSD: Install bindgraph To Make Graphs Results 1 to 7 of 7 Thread: Redirecting stderr to dev null ?? http://supercgis.com/dev-null/redirect-error-unix-dev-null.html If the square root of two is irrational, why can it be created by dividing two numbers?
asked 3 years ago viewed 36700 times active 3 years ago Blog Stack Overflow Podcast #92 - The Guerilla Guide to Interviewing Linked 0 How can I ignore errors in the 2 /dev/null Not Working The OP doesn't said nothing about this... Redirecting that file won't do anything.
Browse other questions tagged command-line io-redirection or ask your own question. use: command 2>&1 1>/dev/null Reply Link nixCraft October 6, 2011, 12:54 am No, it does not matters. 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 Check This Out 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.
shell io-redirection file-descriptors csh portability share|improve this question edited May 21 '14 at 8:40 Gilles 374k696801129 asked Apr 3 '13 at 1:25 Det 498156 1 Note that, while mksh supports Proving an equality in set theory What does Toph's wanted poster say? The length of the null device is always zero. hehe thank you !
It can be used to suppress any output. 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 Code: du -h -c ~ | grep total 2>/dev/null Can anyone help Thanks Adv Reply November 18th, 2009 #2 sisco311 View Profile View Forum Posts Private Message resistance is futile no, do not subscribe yes, replies to my comment yes, all comments/replies instantly hourly digest daily digest weekly digest Or, you can subscribe without commenting.
Schrödinger's cat and Gravitational waves Interaction with dummy variable Does the Iron Man movie ever establish a convincing motive for the main villain? 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. Proving an equality in set theory Can a secure cookie be set from an insecure HTTP connection? Reply Link Gopal May 24, 2015, 2:10 am use tee -a to APPEND output using tee example : command | tee -a outfile.txt Reply Link Gopal May 24, 2015, 2:15 am
These 2 are equivalents: > file and >file. 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 Join Date Aug 2008 Beans 47 Re: Redirecting stderr to dev null ??