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Redirecting Standard Error To Standard Output


exec 3>&1 4>&2 1> >(tee >(logger -i -t 'my_script_tag') >&3) 2> >(tee >(logger -i -t 'my_script_tag') >&4) trap 'cleanup' INT QUIT TERM EXIT get_pids_of_ppid() { local ppid="$1" RETVAL='' local pids=`ps x Note: The order matters as liw.fi pointed out, 2>&1 1>file.log doesn't work. How could a language that uses a single word extremely often sustain itself? the other accepted answer doesn't answer the question! –Charbel Dec 18 '14 at 10:18 @Charbel, It doesn't redirect stderr to the current stdout, it redirects both to a new Source

Why is international first class much more expensive than international economy class? BASH Shell: How To Redirect stderr To stdout ( redirect stderr to a File ) by Vivek Gite on March 12, 2008 last updated March 12, 2008 in BASH Shell, Linux, However if you want them separated you can use the following: (command > stdoutfile) >& stderrfile ...as indicated the above will redirect stdout to stdoutfile and stderr to stderrfile. Then you can use the rich redirections of that shell for the more complex cases where csh may struggle.

Bash Redirect Stdout And Stderr To Dev Null

It almost work, but not from xinted ;( share|improve this answer answered Apr 23 '09 at 13:14 log-control I'm guessing it doesn't work because of "/dev/fd/3 Permission denied". Notice that you should be pretty sure of what a command is doing if you are going to wipe it's output. You can combine the two streams into one if you send it to a pipeline with |&, then all you need to do is find a pipeline component that writes its Some part of my plot has been hiding Interaction with dummy variable How to draw and store a Zelda-like map in custom game engine?

They, like my answer, showed a way to send both to a single stream but that's not the same thing. –paxdiablo Jun 10 '14 at 20:24 My apologies, I Not the answer you're looking for? First, create an executable echo_err that will write a string to stderr: #include int main (int argc, char *argv[]) { fprintf (stderr, "stderr (%s)\n", (argc > 1) ? Bash Echo To Stderr share|improve this answer edited May 31 at 8:44 answered Feb 4 at 13:57 reim 894 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign

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 . Redirect Stderr To Dev Null Put '2>&1' after '>file.log' and it works. –user25148 Mar 12 '09 at 9:25 1 Good point, I seem to have been doing this wrong all these years... In the following example, myprog, which was written to read standard input and write standard output, is redirected to read myin and write myout: % myprog < myin > myout You http://www.tldp.org/LDP/abs/html/io-redirection.html Faria May 18 '15 at 12:59 1 @AndréM.Faria yes.

LOGFILE=script.log echo "This statement is sent to the log file, \"$LOGFILE\"." 1>$LOGFILE echo "This statement is appended to \"$LOGFILE\"." 1>>$LOGFILE echo "This statement is also appended to \"$LOGFILE\"." 1>>$LOGFILE echo "This Csh Redirect Stderr 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 &> Accidentally modified .bashrc and now I cant login despite entering password correctly more hot questions question feed about us tour help blog chat data legal privacy policy work here advertising info Redirect standard output and standard error; overwrite file if it exists | Redirect standard output to another command (pipe) >> Append standard output >>& Append standard output and standard error The

Redirect Stderr To Dev Null

How to explain the concept of test automation to a team that only knows manual testing? This is suitable sometimes for cron entries, if you want a command to pass in absolute silence.

 rm -f $(find / -name core) &> /dev/null 
This (thinking on the Bash Redirect Stdout And Stderr To Dev Null Trick or Treat polyglot Does Anna know what a ball is? Bash Redirect Stderr To Dev Null Faria May 18 '15 at 13:38 @terdon how do I redirect output to a file which has no "w" permission for others , I meant to ask can I

share|improve this answer edited Aug 12 '15 at 8:12 answered Dec 5 '12 at 9:49 paxdiablo 492k1189731424 @Chris, none of the other current answers provide what the OP asked this contact form The classic redirection operator (command > file) only redirects standard output, so standard error is still shown on the terminal. The result of running a script having the above line and additionally this one: echo "Will end up in STDOUT(terminal) and /var/log/messages" ...is as follows: $ ./my_script Will end up in in the first example you wrote: exec 1<>$LOG_FILE . Ambiguous Output Redirect

Are the plane and the third dimensional space homeomorphic? ls -lR > dir-tree.list # Creates a file containing a listing of the directory tree. : > filename # The > truncates file "filename" to zero length. # If file not bash shell redirect pipe share|improve this question edited Nov 2 '15 at 12:01 Peter Mortensen 10.3k1369107 asked Mar 12 '09 at 9:14 flybywire 65.1k146336457 add a comment| 9 Answers 9 active have a peek here Cannot patch Sitecore initialize pipeline (Sitecore 8.1 Update 3) Limit Notation.

Delayed effects after player's death Are C++14 digit separators allowed in user defined literals? (Seemingly) simple trigonometry problem しっているはずです is over complicated? Bash Script Output To File Error messages, like the ones you show, are printed to standard error. Please enable JavaScript to submit this form.

So you stil get to see everything!

Examples: $ who > names Direct standard output to a file named names $ (pwd; ls -l) > out Direct output of both commands to a file named out $ pwd; UbuntuCommunityAsk!DeveloperDesignDiscourseHardwareInsightsJujuShopMore ›AppsHelpForumLaunchpadMAASCanonical current community chat Ask Ubuntu Ask Ubuntu Meta your communities Sign up or log in to customize your list. What is way to eat rice with hands in front of westerners such that it doesn't appear to be yucky? Redirect All Output To File Should non-native speakers get extra time to compose exam answers?

Changing FD #1 doesn't affect FD #3 from now on. How to describe very tasty and probably unhealthy food How to adjust UI scaling for Chrome? Best leave this particular fd alone.

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≡ Menu http://supercgis.com/stderr-to/redirection-of-standard-input-standard-output-and-standard-error-streams.html The latter can be done with either the first part of my answer or this answer but there is no way for csh to do the former.

Tagged with: error message, I/O redirection, keyboard, Linux, log program, program error, redirect stderr stdout to file, redirect stderr to file, redirect stdout to file, redirection, standard error, stderr, stdin, stdout, normal redirection is not working1Can't redirect standard output0How to redirect all manuals to files?1printf, redirection, crontab0What goes on underneath error redirection?-1how to use output redirection to demonstrate what TREE does1Redirecting apt-get I/O RedirectionTable of Contents20.1.