Unexpected parent process id in output Can Customs make me go back to return my electronic equipment or is it a scam? Follow him on Twitter. Otherwise whole glob pattern is returned when you use something like: for temp_file_name in $yesterday_logs $today_logs; do ... So sayeth the Shepherd Least Common Multiple What to tell to a rejected candidate? this contact form
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 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 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 How can I add 2>/dev/null to the command for temp_file_name in $yesterday_logs $today_logs ; do ...? –Uri Aug 10 '15 at 12:20 Of course, the redirection only works for
share|improve this answer answered Aug 30 '15 at 6:45 Uri 152419 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign So sayeth the Shepherd How would family relationships change if legal system uses collective punishment? Can I use an HSA as investment vehicle by overcontributing temporarily? So… I tried to redirect the stderror & stdout to /dev/null this way: rm * /directory1/directory2/ > 2&>1 /dev/null kept changing /dev/null form a special file & other users need crw-rw-rw-
Can filling up a 75 gallon water heater tank without opening a faucet cause damage? What are the canonical white spaces? But as your case also shows (from what I read in the comments) this is a risky thing to do, as it cloaks errors you might have in your code. "I Redirect Stdout And Stderr To Dev Null What to tell to a rejected candidate?
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With the shell option shopt -s nullglob, a glob pattern which does not match any existing file names will be removed entirely (the argument is stripped from the command), thus a Redirect Stderr To Dev Null What you're asking is to set descriptor 2 to /dev/null, then set descriptor 3 to the same file descriptor 2 and have that output go somewhere else. How to handle spending money for extended trip to Europe? But I can see how you didn't really answer the question here. –erickson Sep 23 '12 at 17:05 add a comment| Not the answer you're looking for?
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 weblink asked 4 years ago viewed 37983 times active 4 years ago Linked 544 How to pipe stderr, and not stdout? 0 Shell Scripting - io redirecting - precedence of operators 1 up vote 52 down vote favorite 33 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 If you don't specify a number then the standard output stream is assumed but you can also redirect errors > file redirects stdout to file 1> file redirects stdout to file Pipe Output To Dev Null
Privacy - Terms of Service - Questions or Comments UbuntuCommunityAsk!DeveloperDesignDiscourseHardwareInsightsJujuShopMore ›AppsHelpForumLaunchpadMAASCanonical current community chat Ask Ubuntu Ask Ubuntu Meta your communities Sign up or log in to customize your list. Reply Link Frank June 30, 2009, 5:15 pmneed a command in my bash script to remove some (not all) of the contents of directory2. I wrote a script (according to this question) to count the number of passed and failed tests. http://gatoisland.com/dev-null/bash-redirect-error-to-dev-null.php Let's assume stdin (fd 0), stdout (fd 1) and stderr (fd 2) are all connected to a tty initially, so 0: /dev/tty, 1: /dev/tty, 2: /dev/tty The first thing that gets
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You can send output to /dev/null, by using command >/dev/null syntax. As far my thought for the solution is: tmp_file=`mktemp` (./script 2>$tmp_file >/dev/null; cat $tmp_file) | ./other-script rm tmp_file But you see, this is not synchronous, and fatally, it's so ugly. 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 Redirect Stderr To File Tagged with: > /dev/null 2>&1, cronjobs, I/O redirection, output error messages, redirect stderr to file, redirect stdout to file, standard error, stderr, EasyNext FAQ: FreeBSD: Install bindgraph To Make Graphs About
Standard in, out, and error There are three standard sources of input and output for a program. asked 1 year ago viewed 204 times active 1 year ago Linked 0 How can I count the number of files containing a specific string but not containing another string? Functions 2>&- The general form of this one is M>&-, where "M" is a file descriptor number. his comment is here 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
share|improve this answer edited Sep 26 '13 at 13:55 answered Sep 26 '13 at 8:38 Warren Hill 10.2k104463 add a comment| up vote 10 down vote In short, it redirects stderr Convince people not to share their password with trusted others Can a creature benefit from differently typed speed bonuses all named fast movement? I had a typo in the date -d command, that's why I received the error message. –Uri Aug 9 '15 at 7:45 add a comment| up vote 3 down vote Just Didn't know that one.
This is suitable sometimes for cron entries, if you want a command to pass in absolute silence.
rm -f $(find / -name core) &> /dev/nullThis (thinking on the What does an 'ü' mean? Browse other questions tagged bash or ask your own question. 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 =).