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Dos Batch Error Level


If quitting CMD.EXE, sets the process exit code with that number. [Brought to my attention by Maor Conforti. It's a fallback step, in the same way that your neighbor is a fallback delivery location if you aren't home. Please refer to your application help documentation to determine the meaning of specific error codes.For more information about batch file operations, see the following topics: Using batch parameters Using filters And I still hate it. Check This Out

The set and export command fail if you try. What if that process hasn't exited yet? When it gives that exit code, it is essentially saying: Here are the results of my work. These codes are hidden from the user but may be tested for via various methods.

Dos Batch Error Level

exitCode Specifies a numeric number. Windows NT4 and later: In NT4 use either COLOR00 or VERIFYOTHER2>NUL to set an errorlevel 1. Hi, I'm Steve. billrich Guest Re: DOS IF %ERRORLEVEL% construct « Reply #7 on: September 02, 2009, 10:05:41 AM » This is what Mr.

This webpage gives a short discussion of these codes and ways in which they might be used. Once they are known, you may write much smarter batch files to take advantage of them. It's because the batch file has already displayed choices in the form of a menu via the ECHO lines. Dos Error 4 It took me a little while to figure out that ERRORLEVEL wasn't a normal environment variable.

ERRORLEVEL number Specifies a true condition if the last program run returned an exit code equal to or greater than the number specified. Despite the term "exit codes", "ERRORLEVEL" is used for the tests. Logged BC_ProgrammerMastermind Typing is no substitute for thinking.Thanked: 956 Certifications: List Computer: Specs Experience: Beginner OS: Windows 7 Re: DOS IF %ERRORLEVEL% construct « Reply #10 on: September 02, 2009, 02:49:31 This was an issue I fought with a few months ago on an embedded system running DOS (real DOS, not CMD.EXE).

For What Purposes Can Exit Codes be Used? Dos Error Code 1 share|improve this answer answered Apr 9 '14 at 4:55 rekire 28k2084174 I tried that, it still echos successful for every line. –John Scott Apr 9 '14 at 4:58 Top Profile Reply with quote foxidrive Post subject: Re: Exit /B %ERRORLEVEL% ???PostPosted: 28 Mar 2012 07:00 Offline Expert Joined: 10 Feb 2012 02:20 Posts: 5997 tinfanide wrote:But what's Top Profile Reply with quote foxidrive Post subject: Re: Exit /B %ERRORLEVEL% ???PostPosted: 28 Mar 2012 09:53 Offline Expert Joined: 10 Feb 2012 02:20 Posts: 5997 Yes.

Dos Error 3

Database ECHO Esc: Exit Menu ECHO. If quitting CMD.EXE, set the process exit code no.Could ya explain a bit for the use of this? Dos Batch Error Level It might be a bit worse in terms of performance though. Dos Error 5 You can see in the example that the tests for these levels are done in descending order.

FIND will generate an exit code of `0' if it is, `1' if it is not, and a code of `2' if a problem regarding the FIND command occurs. Performs conditional processing in batch programs. With 256 choices, few commands or programs could ever fill up all the slots unless they became very involved. Thus, tests are done in descending order. (Note that there is a way to do the tests in ascending order but it means much longer lines of code. Dos Error 64

Yes. I would recommend modifying your code to something like the following: :delete echo deleting %1 del /f /q c:\Users\newuser\Desktop\%1 if errorlevel 1 ( rem This block executes if ERRORLEVEL is a Since these codes can indicate what happened during a computer operation, they can be used in a batch file to tailor the direction of further procedures. Comments are closed.

The first program/script must conform to the convention of returning 0 on success and non-0 on failure for this to work. Dos Error 53 By default, the command processor will continue executing when an error is raised. Indicates that the application has been terminated either by user's keyboard input CTRL+C or CTRL+Break or closing command prompt window.3221225794
-1073741502The application failed to initialize properly.

Why Might I Want to Use Exit Codes?

Remember, this is duct tape programming. goto /? It is done by taking each exit code and deciding how you would fix the first result to make a second, more pleasing result. Dos Error Handling SET /A ERROR_HELP_SCREEN=1 SET /A ERROR_FILE_NOT_FOUND=2 SET /A ERROR_FILE_READ_ONLY=4 SET /A ERROR_UNKNOWN=8 This gives me the flexibility to bitwise OR multiple error numbers together if I want to record numerous problems

Perhaps this line is more legible. Deep detail will not be gone into. When you type the file name at the command prompt, Cmd.exe runs the commands sequentially as they appear in the file.You can include any command in a batch file. If implemented well, the result will be achievement of a higher DOS Power-User status.

This possibility would be represented by the case where a batch file programmer has made 254 choices available - an unlikely situation. (Note that CHOICE's Exit Code `0' represents an interruption They even vary from command version to version. Do Programs other than DOS Commands Give Exit Codes? In Windows NT4 (and 2000?) this won't work, since the SET command itself will set an errorlevel (usually 0)! (As I learned from Charles Long, in XP the SET command no

Starting hit points for Arcane Ward How could MACUSA exist in 1693 or be in Washington in 1777? 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