Redirection usually results in temporary files. Are you saying that when you redirect including 2>&1, that the error doesn't occur? Gabor also runs the Perl Maven site. And some, not many, commands send their output to the screen bypassing Standard Output and Standard Error, they use the Console. http://speciii.com/output-to/windows-command-line-redirect-error-output-to-file.html
It can just be dir >> a.txt 2>&1 –raychi Sep 11 '15 at 23:06 add a comment| up vote 4 down vote I just chopped out the answer as @Anders just Writing to files with Perl Appending to files Open and read from text files Don't Open Files in the old way slurp mode - reading a file in one step Lists The output of the directory is being echoed in the console but the file isn't being created. It is said Console cannot be redirected, and I believe that's true.
Use >logfile.txt2>errorlog.txt to redirect success and error messages to separate log files. Other shells might behave in a different way.) As a user, without looking inside the code, you can separate the two channels: If you run perl program.pl > out.txt the > ECHO I suppose that's why CTTY is no longer available on Windows systems. Pipe Command Output To File Linux He loves to help people improve their way of programming.
A workaround that may look a bit intimidating is grouping the command line and escaping the redirection: START CMD.EXE /C ^(command ^> logfile^) What this does is turn the part between Windows Tee Output Browse other questions tagged windows batch-file cmd or ask your own question. Can't locate object method "..." via package "1" (perhaps you forgot to load "1"?) Other Multi dimensional arrays in Perl Multi dimensional hashes in Perl Minimal requirement to build a sane http://stackoverflow.com/questions/1420965/redirect-stdout-and-stderr-to-a-single-file hope it helps jeb share|improve this answer edited Jun 10 at 7:43 mrt 3,39942032 answered Jan 3 '11 at 20:34 jeb 43.2k998118 13 So it is impossible with native windows
Take a look at some of the examples available, they will give you an impression of the many possibilities of redirection page last uploaded: 2016-09-19, 14:57 ( SS64 ) CMD Syntax Windows Command Line Pipe Output To Another Command Whatever is printed to that file will disappear without any trace. Use >CON to send text to the screen, no matter what, even if the batch file's output is redirected. What error message are you seeing when the error occurs? –Kevin Fegan May 3 '13 at 16:11 1 When 2>&1 is not included, the program crashes and I get the
dir file.xxx > output.msg 2> output.err You can print the errors and standard output to a single file by using the "&1" command to redirect the output for STDERR to STDOUT A safer way to redirect STARTed commands' output would be to create and run a "wrapper" batch file that handles the redirection. Windows Stderr Is there a "weighting" involved with Sitecore.ContentSearch.SearchTypes.SearchResultItem? Windows Redirect Stderr To Null What does "M.C." in "M.C.
Next, run: test.bat 2> NUL and you should see: C:\>test.bat This text goes to Standard Output This text goes to the Console C:\>_ We redirected Standard Error to the NUL device, this contact form This typically happens when you try to redirect to a file using a | instead of a >. example DIR > DIR.txt –Random Developer Feb 2 '09 at 16:44 6 Maybe you meant "dir > file.txt >&2", which does appear to work... –andynormancx Feb 2 '09 at 16:48 The general idea was this: CTTY NUL ECHO Echo whatever you want, it won't be displayed on screen no matter what. Windows Echo To Stderr
As one conclusion, it is obvious why the examples of Otávio Décio and andynormancx can't work. For example, the following command appends the directory list produced by the dir command to the Dirlist.txt file: dir>>dirlist.txt To append the output of the netstat command to the end of To turn off buffering use the magic stick called $|: $| = 1; print "before"; print STDERR "Slight problem here.\n"; print "after"; beforeSlight problem here. http://speciii.com/output-to/windows-command-line-redirect-error-output.html REM *** WARNING: THIS WILL NOT REDIRECT STDERR TO STDOUT **** dir 2>&1 > a.txt share|improve this answer edited Oct 9 '15 at 19:40 Peter Mortensen 10.3k1369107 answered May 23 '13
Even commands that send output to a drive or printer display messages and prompts in the Command Prompt window. Batch File Redirect Output To File You can use this operator with most commands. Order of output (buffering) A slight warning: Having this code: print "before"; print STDERR "Slight problem here.\n"; print "after"; The output might look like this: Slight problem here.
It is not ok to use spaces in >> or 2> or 2>&1 or 1>&2 (before or after is ok). Redirect to NUL (hide errors) command 2> nul Redirect error messages to NUL command >nul 2>&1 Redirect error and output to NUL command >filename 2> nul Redirect output to file but Therefore 2> 2.txt works (or 2> &1) 2 > 2.txt does not; 2 > &1 does not. –The Red Pea Apr 3 '15 at 21:41 Reference document from Microsoft: Error Prompt Means Try this: foo.exe>"c:\Program Files (x86)\something\test.txt" If the above doesn't work to capture the output from foo.exe to the text file, then there is another possibility...
What makes an actor an A-lister Word/phrase/idiom for person who is no longer deceived Achieve same random number sequence on different OS with same seed Probability of throwing a die Why This means any print operation that was not told specifically where to print, will be printed to STDOUT. You would have to do it like this: foo.exe>"c:\Program Files (x86)\something\test.txt" 2>&1 Edit: Here is an explanation of file redirection and the 2>&1 notation. Check This Out When you do "normal" redirection with a single > like this: foo.exe > "c:\Program Files (x86)\something\test.txt" you are not specifying which Stream is being redirected to the file, so Stream 1
In most cases the Exit Code is the same as the ErrorLevel Numeric handles: STDIN = 0 Keyboard input STDOUT = 1 Text output STDERR = 2 Error text output UNDEFINED Some notes on this subject can be found on my Temporary Files page. 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 You can use Cmd.exe to run a program and redirect any of the first 10 handles for the program.
File handle 2 is STDERR, redirected by 2>. It is also worth noting that the order is important. Stream 1 is referred to as STDOUT or Standard-Output. Running foo.exe > foo.txt should accomplish this for me, but it's not.
Guides Guide to Windows Batch Scripting Recent Posts Parsing Jenkins secrets in a shell script Jenkins Job to export Rackspace Cloud DNS Domain As BIND Zone Files Troubleshooting GitHub WebHooks SSL mycommand 2>&1 | tee output_file.txt share|improve this answer edited Mar 12 '13 at 12:24 Aliaksandr Belik 7,94953468 answered Oct 29 '11 at 18:57 atn 21122 add a comment| up vote 8 Contact Failed Mail Donate Batch How To ...