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Bash Script Redirect Error To Variable

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Were slings used for throwing hand grenades? Were slings used for throwing hand grenades? Owens 47.3k9101190 2 This is the reason I included the pipe in my example. echo -n . >&3 # Write a decimal point there. this contact form

share|improve this answer answered Jun 2 at 21:19 Warbo 1,1881214 add a comment| up vote 0 down vote WARNING: NOT (yet?) WORKING! The redirection applies only to the program itself. bash stream pipe stdout stderr share|improve this question edited Nov 9 '14 at 10:43 gniourf_gniourf 20.5k43759 asked Dec 10 '12 at 18:08 djechlin 31k1575164 marked as duplicate by Jonathan Lefflerbash Users What are the holes on the sides of a computer case frame for?

Bash Backticks Stderr

Notice that I am using stdout for something. You'll see that result is empty. The result of the pipe is sent to stdout for display or to be piped into another command.

unfortunately, whenever I wrap STDIN inside >( ) with something in $() in an attempt to capture that to a variable, I lose the contents of $(). 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 most basic shell grouping construct, that does nothing but group, is braces. Bash Script Redirect Stderr To Dev Null Why are some programming languages Turing complete but lack some abilities of other languages?

I want to continue using stdout, so redirecting stderr into stdout is not helpful, in this case. Bash Script Redirect Output To Variable bad_command3 # Error message echoed to stderr, #+ and does not appear in $ERRORFILE. # These redirection commands also automatically "reset" after each line. #=======================================================================

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 Bash Redirect Append Edit: Updated the command to redirect stderr from the mysqldump command and not gzip, I was too quick in my first answer. What to tell to a rejected candidate? In my case it was a tiny some_command so there was no performance hit for running twice, and the command had no side effects.

Bash Script Redirect Output To Variable

How to deal with a very weak student? Thanks! –thornate Jun 28 '10 at 8:02 @AdamCrume how would i change this script so that in log file I will have both stderr & stdout ( out \n Bash Backticks Stderr more hot questions lang-sh about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Science Other Bash Script Redirect Output To File And Screen I also know that I could do ./useless.sh 2> /tmp/Error ERROR=`cat /tmp/Error` but that's ugly and unnecessary.

If there's a solution that doesn't involve tmp files, named pipes, or /proc exploitation, it's eluded even my bizarre techniques. weblink Is this safe to display MySQL query error in webpage if something went wrong? printf "\n%s\n%d\n%d\n" \ "$stdout" "$(echo "$stdout" | wc -l)" "$exitcode" } 2>&1)" # extract the stderr, the stdout, and the exit code parts of the captured # output of command. Now I know my ABCs, won't you come and golf with me? Bash Script Redirect Output To Null

As for your "verbose" issue alluded to in your question, just do this instead: verbose=1 if (( verbose )); then mkdir -v -p /foo else mkdir -p /foo > /dev/null 2>&1 How to deal with a really persuasive character? Redirecting Code Blocks20.3. http://waspsoft.com/bash-script/bash-script-redirect-standard-error.html I/O RedirectionTable of Contents20.1.

Somehow intuition keeps telling me that some pattern of recursion, process substitution, pipes, and redirects can hack around it. Bash Capture Stderr To Variable Skeletal formula for carbon with two double bonds Is the empty set homeomorphic to itself? You can't redirect the command's stdout to a file and then replace the displayed stdout with stderr –Michael Mrozek Jun 28 '10 at 6:23 @Michael: See my edit. –Adam

asked 4 years ago viewed 11941 times active 1 month ago Visit Chat Linked 16 capture both stdout and stderr in bash 16 bash variable capture stderr and stdout separately or

UNIX is a registered trademark of The Open Group. Good thought... –Hamy Jun 19 '14 at 6:14 1 If some command changes something like trigger email alert ? –zb' Mar 2 '15 at 2:29 @eicto - then Unfortunately, if no answers turn up here that's what I'm going to have to do. Bash Save Stderr To Variable It's not directly an answer to the question, but I came here with the same question and I think that, long-term, I'm going to switch to a shell based on a

When was this language released? Why? All this is based on the idea that we could convert all captured values to a text line with the help of the function setval, then setval is used to capture his comment is here stderr is redirected to stdout, which is then redirected to a file.

How to indicate you are going straight? If it's just to the console you redirect stdout to console and stderr to stdout to capture it: ERROR=$(./useless.sh | sed 's/Output/Useless/' 2>&1 1>/dev/ttyX) –Tim Kersten Mar 23 '11 at 11:41 Edit: This really does work. 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

Not the answer you're looking for? share|improve this answer edited May 31 '12 at 5:25 answered May 31 '12 at 3:35 Barton Chittenden 2,66911334 1 If you did ./useless.sh 2> >( ERROR=$( cat <() ); echo Then 2>&3 redirects stderr to file number 3, which now is the same as stdout. Not the answer you're looking for?

Sadly, I end up with a solution similar to Mr.