Your shell (probably bash or zsh) is constantly watching that default output place. For example: # Redirect stdout to stdout (FD 1) $ echo "hello there" >&1 hello there # Redirect stdout to stderr (FD 2) $ echo "hello there" >&2 hello there This is very similar to redirecting A. It just confuses people, you are right. Check This Out
command1 | command2 | command3 > output-file See Example 16-31 and Example A-14.Multiple output streams may be redirected to one file. script.sh >output.txt …stdout is not connected to terminal now, how can the scrip get know abot it?? And yes, during my research I found some weirdness in the Bash manual page about it, I will ask on the mailing list. Reuti, 2011/09/21 08:05 I highly suggest to remove the paragraph with: alternative (by closing both filedescriptors): Command >&+2>&+ This is not working as one might expect: the error about not being
keyboard) stdout1standard output stream (e.g. Hehe... Note: The order matters as liw.fi pointed out, 2>&1 1>file.log doesn't work. 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.
If not, why? cat *.txt | sort | uniq > result-file # Sorts the output of all the .txt files and deletes duplicate lines, # finally saves results to "result-file".>outfile just out of box share|improve this answer edited
as you can see. Bash Redirect Stdout To One File And Stderr To Another All rights reserved. Redirection simply means capturing output from a file, command, program, script, or even code block within a script (see Example 3-1 and Example 3-2) and sending it as input This is due to ZSH’s MULTIOS option, which is on by default.
If there’s no file descriptor, then stdout is used, like in echo hello > new-file. Bash Redirect Stdout To Stdin However, your command doesn't work either. Notice that you should be pretty sure of what a command is doing if you are going to wipe it's output. 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...
Your version redirects err to out, and at the same time out to file. –Alex Yaroshevich Mar 8 '15 at 23:22 | show 1 more comment Your Answer draft saved his comment is here I/O RedirectionTable of Contents20.1. Modern soldiers carry axes instead of combat knives. You can manually override that behaviour by forcing overwrite with the redirection operator >| instead of >. Bash Redirect Stdout And Stderr To Different Files
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 Best leave this particular fd alone.PrevHomeNextHere StringsUpUsing exec