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 I can only redirect one of the outputs, not both at the same time. asked 5 years ago viewed 49969 times active 2 years ago Blog Stack Overflow Podcast #92 - The Guerilla Guide to Interviewing Visit Chat Linked 9 Logging stdout and stderr of up vote 92 down vote favorite 20 I know this much: $ command 2>> error $ command 1>> output Is there any way I can output the stderr to the error have a peek at this web-site
There are two incorrect concepts in your answer. To the author of the original post, It depends what you need to achieve. M>N # "M" is a file descriptor, which defaults to 1, if not explicitly set. # "N" is a filename. # File descriptor "M" is redirect to file "N." M>&N # Delayed effects after player's death What are the difficulties of landing on an upslope runway Does Anna know what a ball is? http://www.cyberciti.biz/faq/redirecting-stderr-to-stdout/
These, and any other open files, can be redirected. What is way to eat rice with hands in front of westerners such that it doesn't appear to be yucky? The Rule of Thumb for Title Capitalization How does the exit command work on a Unix terminal? Where's the 0xBEEF?
Redirection of I/O, for example to a file, is accomplished by specifying the destination on the command line using a redirection metacharacter followed by the desired destination. But the last two commands are equivalent, they will send both error and output to the same file. –terdon♦ May 18 '15 at 13:17 As in the link you echo -n . >&3 # Write a decimal point there. http://www.tldp.org/LDP/abs/html/io-redirection.html Does Anna know what a ball is?
I/O RedirectionTable of Contents20.1. 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 Redirect Stderr To Dev Null Draw an hourglass Interaction with dummy variable Are there any pan-social laws? Bash Redirect Stderr To Dev Null OR read more like this:How do I save or redirect stdout and stderr into different files?Linux Redirect Error Output To FileBASH Shell Redirect Output and Errors To /dev/nullUnix and Linux: Redirect
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 &> http://supercgis.com/stderr-to/redirect-standard-error-to-file-linux.html Fwiw, looks like command &2>err.log isn't quite legit -- the ampersand in that syntax is used for file descriptor as target, eg command 1>&2 would reroute stdout to stderr. –DreadPirateShawn Sep Thanks. –Mark Jul 14 '09 at 21:09 20 if you do cmd >>file1 2>>file2 it should achieve what you want. –Woodrow Douglass Sep 6 '13 at 21:24 | show 2 Computing only one byte of a cryptographically secure hash function What is a word for deliberate dismissal of some facts? Ambiguous Output Redirect
A. data going into a program.[b] stdout - Use to write information (screen) [c] stderr - Use to write error message (screen) Understanding I/O streams numbers The Unix / Linux This site is not affiliated with Linus Torvalds or The Open Group in any way. Source So you stil get to see everything!
In practice, it could be a pipe, socket or whatever. Bash Write To Stderr share|improve this answer edited Mar 3 at 18:35 Alois Mahdal 3,43322854 answered Dec 12 '15 at 6:17 Pradeep Goswami 639415 add a comment| up vote 8 down vote Try this You_command 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
Is the domain of a function necessarily the same as that of its derivative? 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 However, your command doesn't work either. Redirect Stdout And Stderr To File Windows Setting noclobber prevents this.
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 bad_command3 # Error message echoed to stderr, #+ and does not appear in $ERRORFILE. # These redirection commands also automatically "reset" after each line. #=======================================================================have a peek here normal redirection is not working1Can't redirect standard output0How to redirect all manuals to files?1printf, redirection, crontab0What goes on underneath error redirection?-1how to use output redirection to demonstrate what TREE does1Redirecting apt-get
ERRORFILE=script.errors bad_command1 2>$ERRORFILE # Error message sent to $ERRORFILE. 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 Any file descriptor can be redirected to other file descriptor or file by using operator > or >>(append). Now, FDs #3 and #4 point to STDOUT and STDERR respectively.
Just something to keep in mind. Not the answer you're looking for? 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 Code Golf Golf Golf How could a language that uses a single word extremely often sustain itself?
asked 1 year ago viewed 9730 times active 1 year ago Blog Stack Overflow Podcast #92 - The Guerilla Guide to Interviewing Related 6How to redirect output to screen as well Are there any ways to speed up blender compositor? UNIX is a registered trademark of The Open Group.