DDoS: Why not block originating IP addresses? It simply silences any sort of output (including error) from the command. SSH makes all typed passwords visible when command is provided as an argument to the SSH command Does the Iron Man movie ever establish a convincing motive for the main villain? So, where is the wrong syntax? http://supercgis.com/dev-null/redirecting-standard-error-to-dev-null.html
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 Try our newsletter Sign up for our newsletter and get our top new questions delivered to your inbox (see an example). 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.
Thanks. –Zaz Apr 12 '14 at 10:30 2 @edelans No. 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 What happens if the same field name is used in two separate inherited data templates? Find 2 Dev Null The program usually prints to standard output, and sometimes prints to standard error.
What does Toph's wanted poster say? 1 Dev Null What does the "stain on the moon" in the Song of Durin refer to? How to search for flights for a route staying within in an alliance? http://unix.stackexchange.com/questions/70963/difference-between-2-2-dev-null-dev-null-and-dev-null-21 Join them; it only takes a minute: Sign up What is /dev/null 2>&1?
Does bitcoin have the potential to be subject to a hard fork where miners are forced to choose which fork they will accept, like Etherum? Redirect Stdin To /dev/null Reply Link Jonathan May 26, 2009, 9:31 pm Thanks! 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 He just wanted to know what it means 2>/dev/null –Radu Rădeanu Sep 27 '13 at 15:02 The OP probably changed the question.
asked 3 years ago viewed 76211 times active 2 years ago Blog Stack Overflow Podcast #92 - The Guerilla Guide to Interviewing Linked 0 What does this ls command do? 53 Save a JPG without a background How to adjust UI scaling for Chrome? Redirect Only Stdout To Dev Null As far as I know, don't remove /dev/null, it's useful especially when you running cpanel, can be used for throw away cronjob report. Redirect Stderr To Dev Null And Stdout To File Why were Native American code talkers used during WW2?
cd /home # This creates the archive tar cf /var/tmp/home_franky.tar franky > /dev/null 2>&1 # First remove the old bzip2 file. UbuntuCommunityAsk!DeveloperDesignDiscourseHardwareInsightsJujuShopMore ›AppsHelpForumLaunchpadMAASCanonical current community chat Ask Ubuntu Ask Ubuntu Meta your communities Sign up or log in to customize your list. DDoS: Why not block originating IP addresses? Source How do you say "enchufado" in English?
UNIX is a registered trademark of The Open Group. Redirect Stderr To Null Windows The OP doesn't said nothing about this... Connected to 192.168.1.10 (192.168.1.10) ------------------------------------- How can I get rid of "Connection closed by foreign host." ?
Functions 2>&- The general form of this one is M>&-, where "M" is a file descriptor number. Otherwise whole glob pattern is returned when you use something like: for temp_file_name in $yesterday_logs $today_logs; do ... Because I don't see how using tar to compress a directory into a tar file could possibly cause any type of errors. Redirect Stderr To Dev Null C Nobody I asked could tell me what the funny greater-thans, ampersands and numbers after the commands meant, and search engines never turned up anything but examples of it being used without
Related 2937Can a Bash script tell which directory it is stored in?683How do I iterate over a range of numbers defined by variables in Bash?1071String contains in Bash1006Check if a program 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. Why is the bridge on smaller spacecraft at the front but not in bigger vessel? (Seemingly) simple trigonometry problem What to do when majority of the students do not bother to have a peek here Limit Notation.
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 Contact: [email protected], Twitter, LinkedIn. How do you say "enchufado" in English? done share|improve this answer answered Aug 9 '15 at 7:06 anubhava 386k32163233 1 Yes, it works.
Usually cron sends an email for every output from the process started with a cronjob. 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 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 Not the answer you're looking for?
Redirecting a stream into it means hiding an output. Does the Iron Man movie ever establish a convincing motive for the main villain?