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Bash Std Error Redirect


Can I log both the stderr and stdout logged to a file? Put '2>&1' after '>file.log' and it works. –Lars Wirzenius Mar 12 '09 at 9:25 1 Good point, I seem to have been doing this wrong all these years... Finding a file starting with '-' dash How would family relationships change if legal system uses collective punishment? Browse other questions tagged linux bash or ask your own question. Check This Out

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 Rankin Sep 2 '14 at 2:04 1 Earlier comments are no longer relevant because the answer has fundamentally changed (for the better). When was this language released? How to map and sum a list fast?

Bash Redirect Standard Error

Should be: yourcommand &>filename (redirects both stdout and stderr to filename). Linked 9 Logging stdout and stderr of node 6 Cause runtime exceptions to be properly ordered with println in console output 1 Send standard out and standard error to different files, Thanks Jan Schampera, 2012/03/23 16:56 Using the test command on the file descriptors in question. [ -t 0 ] # STDIN [ -t 1 ] # STDOUT ... So stderr goes to the stdout and that goes to the file.

The system returned: (22) Invalid argument The remote host or network may be down. Are there any 'smart' ejection seats? 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 Bash Redirect Stderr To Variable I was looking for it around here and didn't find it.

Using exec20.2. Bash Redirect Stderr To Dev Null Did Donald Trump call Alicia Machado "Miss Piggy" and "Miss Housekeeping"? It now discusses how to independently redirect outputs which is useful. –Dom Sep 10 '14 at 8:29 | show 1 more comment up vote -7 down vote Command 1 >> output1.txt; The word WORD is taken for the input redirection: cat <<< "Hello world... $NAME is here..." Just beware to quote the WORD if it contains spaces.

TAG <<-TAG ... Bash Redirect Stderr Pipe A slightly more correct is: The output of the ‘command' is redirected to a ‘file-name' and the error chanel (that is the ‘2' is redirected to a pointer (?) of the The word following the redirection operator in the following descriptions, unless otherwise noted, is subjected to brace expansion, tilde expansion, parameter expansion, command substitution, arithmetic expansion, quote removal, filename expansion, and 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

Bash Redirect Stderr To Dev Null

Additionally it will not append to the file but it will overwrite it. –pabouk May 31 '14 at 12:48 The redirect of output 1 (STDOUT) must be redirected before Privacy - Terms of Service - Questions or Comments current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list. Bash Redirect Standard Error Is my workplace warning for texting my boss's private phone at night justified? Bash Redirect Stderr And Stdout To Same File This will lead to both stderr and stdout go to file-name.

Reply Link Shane Hathaway February 24, 2012, 1:02 amSayed: that line means execute the command while redirecting both stdout and stderr to a file given by file-name. his comment is here It seems that here-documents (tested on versions 1.14.7, 2.05b and 3.1.17) are correctly terminated when there is an EOF before the end-of-here-document tag. Browse other questions tagged bash shell redirect pipe or ask your own question. See also http://www.vincebuffalo.com/2013/08/08/the-mighty-named-pipe.html Real name: E-Mail: Website: Enter your comment. Bash Redirect Stderr And Stdout To Different Files

Jan Schampera, 2011/02/14 06:31 These are 2 cases. Consider it a simplified type of file pointer. Reply Link Sekkuar September 2, 2013, 7:20 pmIncorrect. this contact form This syntax is deprecated and should not be used.

The position on the commandline does not really matter, a redirection (here document) is a redirection: # cat the two files plus "hello world" from standard input by here document redirection Bash Redirect Stdin Religious supervisor wants to thank god in the acknowledgements Should indoor ripened tomatoes be used for sauce? For opening additional files, there remain descriptors 3 to 9.

share|improve this answer answered Apr 23 '13 at 5:07 einstein6 192 add a comment| up vote 1 down vote "Easiest" way (bash4 only): ls * 2>&- 1>&-.

as you can see. Reply Link iamfrankenstein June 12, 2014, 8:35 pmI really love: "command2>&1 | tee logfile.txt"because tee log's everything and prints to stdout . If word evaluates to ‘-’, file descriptor n is closed. Bash Redirect Stderr And Stdout To File And Screen digit is closed after being duplicated to n.

So sayeth the Shepherd Is there a good way to get from Levoča to Lviv? good explanation, I'd like to make a function on C that redirects STDIN and SDTOUT to an script, how can I do that, I mean, the exist a library's on C Just for completion's sake, you can write 1> as just > since the default file descriptor is the output. navigate here Why don't most major game engines use gifs for animated textures?

If the operating system on which Bash is running provides these special files, bash will use them; otherwise it will emulate them internally with the behavior described below. /dev/fd/fd If fd i>&j # Redirects file descriptor i to j. # All output of file pointed to by i gets sent to file pointed to by j. >&j # When taking passengers, what should I do to prepare them? Changing FD #1 doesn't affect FD #3 from now on.

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 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 asked 4 years ago viewed 48807 times active 2 years ago Get the weekly newsletter! Another cool solution is about redirecting to both std-err/out AND to logger or log file at once which involves splitting "a stream" into two.

Verbs of buttons on websites Can I use an HSA as investment vehicle by overcontributing temporarily? Whereas, > will overwrite any existing data in the file.