This will start the windowed application, wait for it to exit, and then return control to the command prompt with the exit status of the process set in ErrorLevel. Error Level The environmental variable %ERRORLEVEL% contains the return code of the last executed program or script. gives loads of info on this too. What is this device attached to the seat-tube? http://twaproductions.com/batch-file/bat-file-print-return-code.html
Why does Alton Brown call for three types of milks in a recipe? CloseHandle( pi.hProcess ); CloseHandle( pi.hThread ); return result; } share|improve this answer edited Aug 16 '11 at 12:44 svick 129k25206319 answered Jun 25 '10 at 17:05 dmihailescu 9441013 add a comment| Is investing a good idea with a low amount of money? Some Final Polish One small piece of polish I like is using return codes that are a power of 2.
Looping through Command Line Arguments The ‘for’ statement can also be used for checking command line arguments. Jumping to EOF in this way will exit your current script with the return code of 1. The conventional technique to check for a non-zero return code using the NEQ (Not-Equal-To) operator of the IF command: IF %ERRORLEVEL% NEQ 0 ( REM do something here to address the if /B is specified, sets ERRORLEVEL that number.
However, I don’t use this technique because programs can return negative numbers as well as positive numbers. I got the following error: 0 was unexpected this time. –Misha Moroshko Oct 1 '10 at 5:13 2 @Misha: You may have tried it with the percent signs the way They are then classified into flow of control statements. Batch File Return Value Is there a limit to the number of nested 'for' loops?
use EXIT /B < exitcodes > at the end of the batch file to return custom return codes. Semack says: September 26, 2008 at 11:09 pm Good post. When EXIT /b used with FOR /L, the execution of the commands in the loop is stopped, but the loop itself continues until the end count is reached. https://www.manageengine.com/products/desktop-central/returning-error-code-on-scripts-how-to.html That would be a neat trick. (I would guess the number of programs that would be broken by the change would be quite near zero.) [I would not be surprised if
Use (set errorlevel=) to clear the environment variable, allowing access to the true value of errorlevel via the %errorlevel% environment variable. Errorlevel Codes Note: Environment variables are a set of dynamic named values that can affect the way, running processes will behave on a computer. Return Code Conventions By convention, command line execution should return zero when execution succeeds and non-zero when execution fails. This was presumably because there were programs that expressed different degrees of failure with higher and higher exit codes.
See AlsoOther ResourcesTeam Foundation Version Control Command-Line ReferenceTf Command-Line Utility Commands Community Additions ADD Show: Inherited Protected Print Export (0) Print Export (0) Share IN THIS ARTICLE Is this page helpful? SomeCommand.exe || EXIT /B 1 A simliar technique uses the implicit GOTO label called :EOF (End-Of-File). Batch File Exit Command Click here it's easy and free. Batch File Exit Code 1 Steps Exit codes for batch files Use the command EXIT /B %ERRORLEVEL% at the end of the batch file to return the error codes from the batch file EXIT /B at
Too bad DOS doesn’t support constant values like Unix/Linux shells. check over here Seems unfair that the microsoft tool gets fancy environment variable expansion, but the only API exposed does plain and ordinary expansion. (*) Really just the "Comments" section, not the entry itself. When a windowed application eventually exits, its exit status is lost. For example, an environment variable with a standard name can store the location that a particular computer system uses to store user profile this may vary from one computer system to Batch Set Errorlevel
windows-xp batch share|improve this question asked Oct 1 '10 at 4:47 Misha Moroshko 1,73361729 1 Also asked on Stackoverflow: How do I get the application exit code from a Windows It’s about a place you get out of. I've just seen it working for > start /wait notepad.exe –dmihailescu Jan 23 '13 at 18:48 1 Great answer! his comment is here I have a program that returns -1 on errors).
SomeCommand.exe || GOTO :EOF Tips and Tricks for Return Codes I recommend sticking to zero for success and return codes that are positive values for DOS batch files. Exit /b Errorlevel Indicates that the specified path cannot be found. 5 Access is denied. Thanks for pointing out the differences between ERRORLEVEL and %ERRORLEVEL%.
It is in form of boolean values, with 0 for success and 1 for failure. I just happened to have finished writing a batch script that was getting ready to go into production using the latter that worked simply because of the fall-back nature of the Mencken fireballsApprentice Code:TerminalThanked: 3 Re: How to return success/failure from a batch file? « Reply #5 on: September 09, 2008, 06:20:39 PM » Quote from: Sidewinder on September 09, 2008, 06:12:06 Batch File Exit Code 0 Btw if you want to discover all the goodies in cmd.exe, the following commands give good help: if /?
A successful command returns a 0 while an unsuccessful one returns a non-zero value that usually can be interpreted as an Error Code. To know about Environment variable see the below note. Mencken fireballsApprentice Code:TerminalThanked: 3 Re: How to return success/failure from a batch file? « Reply #7 on: September 09, 2008, 06:57:18 PM » Quote from: Sidewinder on September 09, 2008, 06:51:56 weblink If both of the above condition passes then the string “Successful completion” will be displayed in the command prompt.
This documentation is archived and is not being maintained. I did not know about that command. This return code tells me that both errors were raised. Help with a prime number spiral which turns 90 degrees at each prime Is the computer cheating in the dice game?