This site is not affiliated with Linus Torvalds or The Open Group in any way. Why don't most major game engines use gifs for animated textures? Bash / ksh and other modern shell on Linux has three file descriptors:stdin (0)stdout (1)stderr (2)Syntax To redirect all output to fileThe syntax is as follows to redirect output (stdout) as bad_command3 # Error message echoed to stderr, #+ and does not appear in $ERRORFILE. # These redirection commands also automatically "reset" after each line. #=======================================================================navigate here
share|improve this answer edited Apr 3 '13 at 8:44 lesmana 8,89053856 answered Apr 3 '13 at 2:25 BriGuy 1,6981615 3 |& and &>/dev/null are not portable. –Chris Down Apr 3 io-redirection share|improve this question edited Nov 4 '11 at 17:31 John 2001310 asked Nov 4 '11 at 15:19 whoami 1,18221222 5 You might also find this explanation useful. –rozcietrzewiacz Nov Can filling up a 75 gallon water heater tank without opening a faucet cause damage? exec 3>&- # Close fd 3.
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They were in zsh from the start and have only been added recently to bash. Can filling up a 75 gallon water heater tank without opening a faucet cause damage? When was this language released? Bash Redirect Stderr Pipe Under normal circumstances, there are 3 files open, accessible by the file descriptors 0, 1 and 2, all connected to your terminal: NameFDDescription stdin0standard input stream (e.g.
Hehe... Bash Redirecting Stderr And Stdout To Same File csh introduced >& also available in zsh. 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 See the page about obsolete and deprecated syntax.
When Bash creates a child process, as with exec, the child inherits fd 5 (see Chet Ramey's archived e-mail, SUBJECT: RE: File descriptor 5 is held open). 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 Bash Redirect Standard Error To /dev/null GTIN validation Convince people not to share their password with trusted others spectral norm of block-wise sums of matrices What are the canonical white spaces? Bash Redirect Stderr And Stdout To Different Files They're just syntactic sugar, just use > file 2>&1 which is standard and portable (to Bourne-like shells). –Stéphane Chazelas Dec 9 '14 at 14:26 | show 2 more comments Your Answer
command < input-file > output-file # Or the equivalent: < input-file command > output-file # Although this is non-standard. check over here Your cache administrator is webmaster. asked 3 years ago viewed 24425 times active 3 years ago Linked 0 Some errors are not logged, after redirecting both stderr and stdout to a file Related 17Show only stderr Portability to non-bash, tcsh, mksh, etc. Bash Redirect Stderr To Variable
It's a mighty tool that, together with pipelines, makes the shell powerful. How would family relationships change if legal system uses collective punishment? It's free: ©2000-2016 nixCraft. http://onlinetvsoftware.net/bash-redirect/bash-redirecting-standard-error-to-standard-output.php Best leave this particular fd alone.PrevHomeNextHere StringsUpUsing exec