share|improve this answer edited Mar 12 '09 at 9:33 answered Mar 12 '09 at 9:17 Guðmundur H 4,88121519 add a comment| up vote 19 down vote Curiously, this works: yourcommand &> Supplementary info to the question shouldn't be removed, especially in a 6 month old answer. –Jeff Ferland Sep 1 '09 at 14:14 13 This syntax is deprecated according to the This is why pipes work. Code Golf Golf Golf Why is international first class much more expensive than international economy class? have a peek at this web-site
cp: error reading ‘/mnt/tt/file.txt’: Input/output error cp: failed to extend ‘/mnt/tt/file.txt’: Input/output error I want to save that content to a file. Reusable Matrix block types Why did the distance requirement for my buddy change? I really like your explanation of how 1> can be written as > –user784637 Oct 26 '11 at 13:25 How is this different from like command &2>err.log, I think I/O RedirectionTable of Contents20.1. http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO-3.html
So you stil get to see everything! The accepted answer do_something &>filename doesn't. +1. –Withheld Jan 4 '13 at 16:01 4 @Daniel, but this question is specifically about bash –John La Rooy Aug 19 '13 at 3:38 command | command | command >> file This pattern predirects the standard output of the first command and filters it through the next two commands. It then appends the error message caused by an invalid wc argument to the same file.
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 Examples Now that you have been introduced to redirection, piping, and basic filters, let's look at some basic redirection patterns and examples. Where's the 0xBEEF? http://www.cyberciti.biz/faq/redirecting-stderr-to-stdout/ This is suitable sometimes for cron entries, if you want a command to pass in absolute silence.
rm -f $(find / -name core) &> /dev/nullThis (thinking on the
ls ~ | grep *tar | tr e E >> ls_log.txt This begins by running ls in your root directory (~) and piping the result to the grep command. Bash Echo To Stderr ERRORFILE=script.errors bad_command1 2>$ERRORFILE # Error message sent to $ERRORFILE. Follow him on Twitter. Multiple pipes can be used to redirect output across multiple commands and/or filters.
wc /etc/magic | tee magic_count.txt This pipes the counts for characters, lines, and words in the magic file (used by the Linux shell to determine file types) to the tee command, Check This Out I also know how to redirect output from display/screen to a file using the following syntax:cmd > file ls > file However, some time errors are displayed on screen. To the author of the original post, It depends what you need to achieve. Faria 4061718 add a comment| 1 Answer 1 active oldest votes up vote 16 down vote accepted There are two main output streams in Linux (and other OSs), standard output (stdout)and Bash Pipe Stderr
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 . It's free: ©2000-2016 nixCraft. command >> file This pattern redirects the standard output of a command to a file without overwriting the file's existing contents. http://supercgis.com/stderr-to/redirecting-error-output-linux.html Standard output and standard error are displayed on the user's terminal as text.
Reply Link Security: Are you a robot or human? Redirect Stdout And Stderr To File Windows Tagged with: Easy Next FAQ: FreeBSD: (EE) Failed to load module "fbdev" (module does not exist, 0) Error and Solution Previous FAQ: FreeBSD 10: Apply Binary Updates To Keep Base System Cannot patch Sitecore initialize pipeline (Sitecore 8.1 Update 3) Is the domain of a function necessarily the same as that of its derivative?
For opening additional files, there remain descriptors 3 to 9. Limit Notation. I upvoted the accepted answer :) –Costi Ciudatu May 25 '14 at 19:10 2 &> now works as expected on OS X 10.11.1 (seems to be bash 3.2), just for Tcsh Redirect Stderr shell io-redirection openbsd share|improve this question asked Jun 25 '13 at 19:12 Torxed 73031029 add a comment| 1 Answer 1 active oldest votes up vote 37 down vote accepted I believe
Best leave this particular fd alone.PrevHomeNextHere StringsUpUsing exec