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Dos Return Value From Batch File


Return Code Conventions By convention, command line execution should return zero when execution succeeds and non-zero when execution fails. Passing Function Arguments How to pass arguments to the function? Please login or register.Did you miss your activation email? 1 Hour 1 Day 1 Week 1 Month Forever Login with username, password and session length Forum only search News: Home Can we say "He is accountable but not blamable" ? Check This Out

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 Thus, "IF ERRORLEVEL 2 GOTO PROBLEM" means that if the exit code is number `2' (at a level of `2'), the batch file is to branch to the "PROBLEM" section. Description: Being able to completely encapsulate the body of a function by keeping variable changes local to the function and invisible to the caller we are now able to call a What precisely differentiates Computer Science from Mathematics in theoretical context?

Dos Return Value From Batch File

XCOPY, for instance can fail with errorlevels 1 to 5. Example: The next example below shows how to calculate a Fibonacci number recursively. Use a space or a comma to separate arguments. Conversely, if the file did not contain the string, a different operation might be done.

One code might signal that the task ended with no errors, or that it ended with no errors but that the operation was not successful. windows cmd dos return-code share|improve this question asked Mar 26 '10 at 8:07 Warpin 3,48473764 add a comment| 1 Answer 1 active oldest votes up vote 42 down vote accepted echo How old is Maz Kanata? Dos Error Level Description: The assumption is: A batch script snippet can be named a function when: ...

To execute a follow-on command after sucess, we use the && operator: SomeCommand.exe && ECHO SomeCommand.exe succeeded! It is used to take a user's selection and act upon it. If there is a problem, the batch file branches to the "PROBLEM" section, places some text on the screen via ECHO commands and then ends. So "IF ERRORLEVEL 2 GOTO PROBLEM" actually says if the exit code is level `2' or higher, the batch file is to branch to the "PROBLEM" section.

However, I don’t use this technique because programs can return negative numbers as well as positive numbers. Dos Error Code 1 Changes made im between are local to the current batch. Conditional Execution Using the Return Code There’s a super cool shorthand you can use to execute a second command based on the success or failure of a command. Return code (ERRORLEVEL): 0 WARNING: Reloaded COMMAND.COM transient I changed the program a bit: CPP / C++ / C Code:

int main(int argc, char * argv[]) 

Dos Error 5

Perhaps the syntax of the request was incorrect or the user pressed Control-C. Do Programs other than DOS Commands Give Exit Codes? Dos Return Value From Batch File Can 'it' be used to refer to a person? Dos Error 64 When it gives that exit code, it is essentially saying: Here are the results of my work.

The last command executed in the function or the script determines the exit status. his comment is here It isn’t always pretty, but, it gets the job done. Press any key to continue . . . here the myDosFunc function is executing a group of commands it could do 100 of things for. Dos Error 4

The main script: starting at line 1 ending with a GOTO:EOF command that terminates the script. What should I do? wmmccoy0910 C Programming Language 12 04-Sep-2006 03:40 Here it is again! 35% - 40% off For Life! share|improve this answer answered Feb 4 at 20:48 taras.roshko 3,92432964 Is this Powershell script?

Returns the error code of the most recently used command. Dos Error 53 I was thinking more along the line where b.bat would abort early based on some condition:b.batCode: [Select]if not exist c:\file.ext exit 7
if not defined userprofile exit 9
exit 0
a.bat it exchanges data with the calling code strictly through input and output variables or a return code.

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Yes. Do All DOS Commands Generate these Codes? In addition, there are also those that are programmed to generate random, meaningless numbers upon completion. Dos Error 2 The only way really is to do a for loop it seems to get the exact value. #5 24-Nov-2008, 19:56 Howard_L Senior Member Join Date: Apr 2007 Location:

Generally, the worse the error, the higher the number, or level, of the error. Not the answer you're looking for? If you want to know more, see your DOS manual and/or the On-Screen Help. Uk transit Visa and USA visit visa Should I serve jury duty when I have no respect for the judge?

How Do I find Out what Codes are Available? The best generate a large array with enough specific circumstances covered to be very useful. This was what I did. –Duat Le Jun 29 '11 at 0:12 3 If rmdir dodgy fails, but there is a file named 'dodgy', then you're in trouble :) To