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exec 4<>ccc.out # Also print the contents of this file to screen. Not the answer you're looking for? The other is to append. exec > means, move the target of a file descriptor to a certain destination. http://supercgis.com/stderr-to/redirect-error-to-file.html

Follow him on Twitter. Not the answer you're looking for? Are there any pan-social laws? I started out thinking he could put his input in a file, and changed my mind to simply using echo instead, but forgot to change the command-line to match.

Redirect Stdout And Stderr To Dev Null

Any file descriptor can be redirected to other file descriptor or file by using operator > or >>(append). cmd &>> file.txt did not work for me. If the square root of two is irrational, why can it be created by dividing two numbers?

asked 7 years ago viewed 354083 times active 7 months ago Blog Stack Overflow Podcast #92 - The Guerilla Guide to Interviewing Get the weekly newsletter! bash stdout stderr share|improve this question edited Sep 23 '11 at 10:11 asked Sep 23 '11 at 9:35 sdmythos_gr 1,67121321 2 possible duplicate of Redirect stderr and stdout in a Delayed effects after player's death Manually modify lists for survival analysis Notation: SPACE(n) vs SPACE(O(n)) What's the point of Pauli's Exclusion Principle if time and space are continuous? Redirect Stderr Tcsh If the square root of two is irrational, why can it be created by dividing two numbers?

Same thing for the second: 2> >(tee stderr.log >&2) We use process substitution again to make a tee process that reads from STDIN and dumps it into stderr.log. Redirect Stderr To File I meant to write 2>&1. –John Kugelman Jun 10 '14 at 11:38 When the question arises: what is the meaining of & sign with a number after it (i.e. Delayed effects after player's death How come Ferengi starships work? I have another question, how do I redirect the stdout and stderr when running a script.

Not the answer you're looking for? Redirect Stderr And Stdout To Different Files The classic redirection operator (command > file) only redirects standard output, so standard error is still shown on the terminal. 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. Stdout is the normal output stream while stderr is the output stream for error.

Redirect Stderr To File

Faria May 18 '15 at 12:59 1 @AndréM.Faria yes. Should be: yourcommand &>filename (redirects both stdout and stderr to filename). Redirect Stdout And Stderr To Dev Null share|improve this answer answered May 18 '15 at 12:50 terdon♦ 42.5k686154 So 'hashdeep -rXvvl -j 30 -k checksums.txt /mnt/app/ >> result_hashdeep.txt 2> error_hashdeep.txt &' or 'hashdeep -rXvvl -j 30 Redirect Stdout And Stderr To File Windows In practice, it could be a pipe, socket or whatever.

make? –Cristina May 15 '10 at 13:09 add a comment| 5 Answers 5 active oldest votes up vote 32 down vote command &> output.txt You can use &> to redirect both this contact form STDERR to "where stdout goes" Note that the interpretion "redirect STDERR to STDOUT" is wrong. –TheBonsai May 18 '09 at 8:55 18 It says "append output (stdout, file descriptor 1) A simple '>' is not working since the command expects keyboard input. Not the answer you're looking for? Linux Redirect Stderr To Null

Does dropping a Coursera course look bad in a PhD application to the university offering the course? 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 Logical && statement with null validation What's the point of Pauli's Exclusion Principle if time and space are continuous? have a peek here In it, you'll get: The week's top questions and answers Important community announcements Questions that need answers see an example newsletter By subscribing, you agree to the privacy policy and terms

Thanks guys! –jparanich Mar 28 '09 at 16:24 add a comment| up vote 9 down vote In other words, you want to pipe stdout into one filter (tee bbb.out) and stderr Ambiguous Output Redirect How do you say "enchufado" in English? How do I do that in Bash?

Notice that you should be pretty sure of what a command is doing if you are going to wipe it's output.

tee outputs its input back on STDOUT, but since its input is our STDERR, we want to redirect tee's STDOUT to our STDERR again. Do I need to turn off camera before switching auto-focus on/off? Note while Linux generally has a current version of bash, OS X, at the time of writing, still requires bash 4 to manually installed via homebrew etc. –mikemaccana May 20 '13 Append Stderr To File Could IOT Botnets be Stopped by Static IP addressing the Devices?

Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the What does the "stain on the moon" in the Song of Durin refer to? Join them; it only takes a minute: Sign up How to pipe the output of a command to file on Linux up vote 11 down vote favorite 5 I am running Check This Out In bash (and ksh and zsh), but not in other POSIX shells such as dash, you can use process substitution: ./aaa.sh > >(tee bbb.out) 2> >(tee ccc.out) Beware that in bash,

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 The syntax is (beside other redirection syntax) described here: http://bash-hackers.org/wiki/doku.php/syntax/redirection#appending_redirected_output_and_error_output share|improve this answer edited Mar 23 '14 at 11:24 Mathias Bynens 74k34147196 answered May 18 '09 at 4:42 TheBonsai 6,48731414 3 Limit Notation. What is the meaning of the 90/10 rule of program optimization?

Draw an hourglass Does the local network need to be hacked first for IoT devices to be accesible? I had a typo in my answer. 2&>1 is not valid. Thanks this is a great post and be very helpful when creating scripts. linux ubuntu share|improve this question edited May 22 '14 at 19:45 DemiSheep 3881934 asked May 15 '10 at 13:03 morpheous 5,0582263103 What is the name of the command are

Then see what happens when you issue exec 2>/tmp/stderr.log. Reply Link Security: Are you a robot or human? Related 773How to symlink a file in Linux?235Append one file to another in Linux2How to pipe the output of the Linux which command into the Linux file command?81adb devices command not The way to go portable (similar to the appending answers) always was and still is >outfile 2>&1 –TheBonsai May 18 '09 at 4:48 add a comment| 6 Answers 6 active oldest

Any idea why? –Alexandre Holden Daly May 30 '14 at 12:12 1 Note that (by default) this has the side-effect that $? Print some JSON How to explain centuries of cultural/intellectual stagnation? 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 I made the fix and added the post to community wiki –f3lix Mar 12 '09 at 9:49 4 If you want to append to a file then you must do

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 How would I accomplish that... Any suggestions on how to modify the piece below? ./aaa.sh | tee ./bbb.out Update: stdout and stderr should still both be printed to the screen, regardless. Note: Since bash version 4 you may use |& as an abbreviation for 2>&1 |: ./aaa.sh |& tee -a log share|improve this answer edited Nov 13 '14 at 11:42 Dmitry Volosnykh

Then we use file redirection to redirect command's STDERR to the FIFO's input (tee's STDIN). The classic redirection operator (command > file) only redirects standard output, so standard error is still shown on the terminal.