Batch File Error Handling
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Batch File Error Handling Errorlevel
like you, helping each other. Join them; it only takes a minute: Sign up Batch Programming, Error Handling, and Start Command up vote 6 down vote favorite I am just starting to learn how to script. I'm
Dos Batch File Error Handling
trying to understand how the system handles Error Levels and how they can be used in error handling. I know there is a difference between the environment variable %ERRORLEVEL% and the Error Level of the system. If I understand this correctly, then the If ERRORLEVEL 1 code would check the environment variable before it checks the error level of the previous command. So, in my program I am trying to interface a startup/stop script that error handling batch script will start/stop all scripts of a given machine (for testing I'm just using one application notepad.exe as an example). I have two wrapper scripts that will either start up or stop the applications by passing arguments to the independent script. If there is an error in the independent script, it will set the errorlevel using the EXIT /B n command. Once control is returned to the calling script, it will go to an error handling script if the exit status is non-zero. At first I was setting the %ERRORLEVEL% to zero manually and then testing for an error after a START or TASKKILL command. But then I read that clearing %ERRORLEVEL% with SET ERRORLEVEL= is a better method. My issue comes in when I try to start the app with START "" notepad.exe Whenever I test the errorlevel after this command it is always greater than or equal to 1 unless I use SET ERRORLEVEL=0 before I run the start command. I have inserted the code for the four scripts below. Any insight and advice would be greatly appreciated. appstart.bat: @echo off :: Script for application Start set ERRORLEVEL= :: **** :: Additional Batch files will be executed from within this file :: Example: :: Call Appbat01.bat :: The called batch file should set ERRORLEVEL non-zero if error :: **** call test.bat -
Checking and Running as Scheduled Tasks ★★★★★★★★★★★★★★★ Paul Adams (ex-MSFT)June 6, 201016 0 0 0 Batch files may be considered
Windows Batch Error Handling
“old hat” by a lot of people (or a complete mystery windows batch script error handling to the younger ones!) but they are sometimes still the easiest way to execute simple jobs as error checking in batch script they have practically no requirements other than a command shell process to run within – yes there is a strong probability that a script could achieve an identical (or http://stackoverflow.com/questions/6498460/batch-programming-error-handling-and-start-command at least equivalent) result, but the fact is that it will be more complex and therefore longer to create and administer. Something that trips up a fair number of people is the difference between double-clicking a .BAT file and scheduling it as a task to run at a certain time, on a trigger or on a schedule https://blogs.technet.microsoft.com/mrsnrub/2010/06/06/batch-files-basic-error-checking-and-running-as-scheduled-tasks/ – it can seem that the batch file just simply does not run at all, and the return code sent back to the Task Scheduler is often 0x2, “path not found”, even though the file most definitely is there. When you double-click a .BAT or .CMD file through Explorer, a cmd.exe process is started to provide the environment in which it will run. The credentials used are your own (or more correctly, inherited from the Explorer process). The “current working directory” is set to that where the batch file lives. When the Task Scheduler service starts the same batch file it actually invokes an instance of cmd.exe (as SYSTEM impersonating the user whose credentials are defined in the task) to carry out the process and waits for it to exit with a return code – the current working directory for this process is not that of the batch file, but that of cmd.exe itself. i.e. %windir%\system32 Now, if your batch file assumes that you launched it throu
This Site Careers Other all forums Forum: General Computing DOS batch file error handling? Alan Wanwierd Ranch https://coderanch.com/t/132733/gc/DOS-batch-file-error-handling Hand Posts: 624 posted 8 years ago I'm writing a batch file to join together a bunch of processes triggered by batch files... When everything works its great, but my error handling sucks. I've tried using the %ERRORLEVEL% variable to crudely trap my errors, but my outer calling batch error handling file never goes into error: call Batch1.bat if %ERRORLEVEL% NEQ 0 goto failed echo ...Completed Batch1, %ERRORLEVEL% call Batch2.bat if %ERRORLEVEL% NEQ 0 goto failed echo ...Completed Batch2, %ERRORLEVEL% Call Batch3.bat if %ERRORLEVEL% NEQ 0 goto failed echo ...Completed Batch3, %ERRORLEVEL% goto end :failed echo ....ERROR Please check logs batch file error for further details, %ERRORLEVEL% :end endlocal The output I end up with is: ...Completed Batch1, 0 .......BATCH2 ERRROR, Please check logs for details ...Completed Batch2, 0 ...Completed Batch3, 0 Obviously the Batch2.bat file is erroring - but the error is not being passed back. Is there a way around this? Post Reply Bookmark Topic Watch Topic New Topic Similar Threads how to redirect the tomcat (5.0) console output to a text file how to run mvn commands using ms bat file How to trap a java exception where java is invoked from a .bat file Setting up the Java Web Services tutorial and Sun Java system appn server Cruise control giving wrong status in email. All times are in JavaRanch time: GMT-6 in summer, GMT-7 in winter Contact Us | advertise | mobile view | Powered by JForum | Copyright © 1998-2016 Paul Wheaton