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Batch Redirect Output To File And Console

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windows command-line process cmd exit-code share|improve this question asked Dec 2 '08 at 18:04 Skrud 3,63831622 5 Also asked on SuperUser: How to check the exit code of the last Marty says: September 27, 2008 at 11:34 am A god safety net is to reset ERRORLEVEL each time you use it, similar to the SetLAstError() function. To execute a follow-on command after sucess, we use the && operator: SomeCommand.exe && ECHO SomeCommand.exe succeeded! You have to code for halting on error. navigate here

So to check the exit status, we could write the script this way: # Check the exit status cd $some_directory if [ "$?" = "0" ]; then rm * else echo How to politely decline my salary due to feeling I don't currently deserve it? How might a government pass a law without the population knowing? That usage is simply a style thing. http://www.robvanderwoude.com/battech_redirection.php

Batch Redirect Output To File And Console

LCD RGB Grove with RPI Minimum money needed for the worst case to guess the right number Why does the '!!' shortcut fail to execute the previously run command? This can be selected by launching CMD /A or CMD /U With the default settings a UCS-2 file can be converted by redirecting it (note it's the redirection not the TYPE/MORE Now make a typo again: EHCO Hello world 2>NUL What did you get? Find the "Recursive Size" of a List How to respond to your boss's email about a coworker's accusation?

CMD Syntax TYPE - Display the contents of one or more text files Q245031 - Error when using the | pipe symbol Successive redirections explained (1>&3 ) - Stack Overflow Equivalent Now try this (note the typo): EHCO Hello world>NUL The result may differ for different operating system versions, but in Windows XP I get the following error message: 'EHCO' is not i.e try to write to another file file2.txt –Joe Feb 28 '11 at 11:07 I still get errorlevel=0 regardless whether I can write to the file or not –Tadhg Batch File Output To Text File With Timestamp c:\mypath\myexe.exe | find "ERROR" >nul2>nul if not ERRORLEVEL 1 ( echo.

I didn't think about trying 2>> (actually didn't even know what 2> did until now), so I just did that one and it worked, even with >> :-)Code: [Select]net use Z: Batch File Redirect Output Bash uses the variable $? cmd share|improve this question asked Feb 28 '11 at 10:28 Tadhg 88215 add a comment| 2 Answers 2 active oldest votes up vote 2 down vote echo FlagValue=Y>>flag.txt || echo access_denied I can assure you I did try!

Logged gplApprentice Thanked: 27 Re: How to capture batch file error msg's? « Reply #3 on: May 11, 2010, 09:44:53 AM » Thank you for the confirmation of 2>> - I Batch File Output To Text File Append A very helpful feature is the built-in DOS commands like ECHO, IF, and SET will preserve the existing value of %ERRORLEVEL%. That is what you see on screen as normal messages, 2> or 2>> will output error messages. I like to include the name of the program in the error message to make clear where the error is coming from.

Batch File Redirect Output

But the next one is new: test.bat > NUL 2>&1 and you should see: C:\>test.bat This text goes to the Console C:\>_ This time we redirected both Standard Output and Standard Mobile website menu. Batch Redirect Output To File And Console asked 7 years ago viewed 409543 times active 1 month ago Upcoming Events 2016 Community Moderator Election ends in 3 days Get the weekly newsletter! Batch File Logging Menu Home News FAQ Search Scripting Languages Batch Files Getting Started Batch Techniques Batch HowTos Commands Command Line Switches Shutdown Commands Short Command Line Tips Admin One-Liners Examples Samples Collections Tools

Hi, I'm Steve. check over here Not the answer you're looking for? Trying start /wait didn't work. share|improve this answer edited Aug 16 '11 at 12:44 svick 127k23199312 answered Dec 2 '08 at 18:09 Adam Rosenfield 244k66376494 6 It's not an actual environment variable (which is, obviously, Error Handling In Batch Script

In Windows NT4, early Windows 2000 versions, and OS/2 there used to be some ambiguity with ECHOed lines ending with a 1 or 2, immediately followed by a >: ECHO Hello It's not, if nothing goes wrong. It is said Console cannot be redirected, and I believe that's true. his comment is here But what happens if the directory named in $some_directory doesn't exist?

For example, you can test that an executable program or script is in your PATH by simply calling the program and checking for return code 9009. Batch File Display Message How to respond to your boss's email about a coworker's accusation? So "errorlevel 0" will match everything.

Warning messages typically don’t effect the return code.

What matters is did the script work or not? So i created a little bash script to take care of this. The maximum number of consecutive pipes is 2042 Examples: DIR >MyFileListing.txt DIR /o:n >"Another list of Files.txt" DIR C:\ >List_of_C.txt 2>errorlog.txt DIR C:\ >List_of_C.txt & DIR D:\ >List_of_D.txt ECHO y| DEL Batch File Log Output With Date Why do most of us wear wristwatches on the left hand?

share|improve this answer answered Feb 28 '15 at 19:33 jonretting 36415 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign Note: Be careful when using workarounds like these, they may be broken in future (or even past) Windows versions. I have written if errorlevel == 3 goto tag3 more times that i would like to. weblink Maybe cmd.exe builtin set could set its exit value to the value passed in instead of setting the environment variable when the variable being set in is named ERRORLEVEL?

Before posting on our computer help forum, you must register. It is very important to check the exit status of programs you call in your scripts. The positive values are a good idea because other callers may use the IF ERRORLEVEL 1 syntax to check your script. Example @echo off my_nify_exe.exe if errorlevel 1 ( echo Failure Reason Given is %errorlevel% exit /b %errorlevel% ) Warning: If you set an environment variable name errorlevel, %errorlevel% will return that

The second use, ${1:-"Unknown Error"} means that if parameter 1 ($1) is undefined, substitute the string "Unknown Error" in its place. Related 270Is there a command to refresh environment variables from the command prompt in Windows?68Removing double quotes from variables in batch file creates problems with CMD environment1How to capture display output The two lines change the working directory to the name contained in $some_directory and delete the files in that directory. This can be useful for error messages.

However, I don’t use this technique because programs can return negative numbers as well as positive numbers. It is not ok to use spaces in >> or 2> or 2>&1 or 1>&2 (before or after is ok).