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If executed from outside a batch script, it will quit CMD.EXE. Not the answer you're looking for? The syntax couldn't be simpler: ERRORLVL number or SETERLEV number where number can be any number from 0 to 255. brought me an idea how to implement several retries: cmd || cmd || ...

Contact Failed Mail Donate Errorlevels The correct name for errorlevels would be return codes. compare-op can be one of EQU : Equal NEQ : Not equal LSS : Less than < LEQ : Less than or Equal <= GTR : Greater than > GEQ : DOS/Win9x's command.com or Win2k+'s cmd.exe? Why do Internet forums tend to prohibit responding to inactive threads?

Batch File Error Handling Tutorial

Even better, I can repeatedly call the bitwise OR with the same error code and still interpret which errors were raised. << Part 2 – Variables Part 4 – stdin, stdout, This enables writing more complex IF… ELSE… commands: IF EXIST filename.txt ( Echo deleting filename.txt Del filename.txt ) ELSE ( Echo The file was not found. ) When using parenthesis the Living on an Isolated Peninsula - Making it Impossible to Leave Why are Car Batteries Still So Heavy? I was allowed to enter the airport terminal by showing a boarding pass for a future flight.

D:\Tools\My Program>_ share|improve this answer edited Jul 4 '14 at 20:45 answered Jul 4 '14 at 9:20 LPChip 20.3k32351 3 you can use the /D switch to switch drive letters IF EXIST filename will return true if the file exists (this is not case sensitive). ping -invalid-arg || goto :error echo OH noes, this shouldn't have succeeded. Batch File Continue On Error Cmd.exe runs the first command, and then runs the second command only if the first command did not complete successfully (receives an error code greater than zero).

Right now, it looks like any time invested in learning and using PowerShell will be time well spent. Does it work? I also recommend documenting your possible return codes with easy to read SET statements at the top of your script file, like this: SET /A ERROR_HELP_SCREEN=1 SET /A ERROR_FILE_NOT_FOUND=2 Note that cmd2 executes even if the first command fails.

Just a block of code is not very helpful. –PoweredByOrange Sep 5 '13 at 23:48 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign Windows Batch Errorlevel If quitting CMD.EXE, sets the process exit code with that number. [Brought to my attention by Maor Conforti. If you choose to participate, the online survey will be presented to you when you leave the Technet Web site.Would you like to participate? A certain errorlevel may mean anything the programmer wanted it to.

Return Error Code From Batch File

Warning messages typically don’t effect the return code. visit Purpose of having good credit when you are well-off? Batch File Error Handling Tutorial Why is engine displacement frequently a few CCs below an exact number? Batch File Error Checking The positive values are a good idea because other callers may use the IF ERRORLEVEL 1 syntax to check your script.

Tootab would make Tools if that folder exists. The fact that Microsoft is now requiring all of its server programs (Exchange, SQL Server etc) to be PowerShell drivable was pure icing on the cake. And, no, I'm not Steve Jansen the British jazz drummer, though that does sound like a sweet career. Goodness Giza Golf! Batch File On Error Goto

File syntax IF [NOT] EXIST filename command IF [NOT] EXIST filename (command) ELSE (command) String syntax IF [/I] [NOT] item1==item2 command IF [/I] item1 compare-op item2 command IF [/I] item1 compare-op Why are static password requirements used so frequently? I've also updated my code per CodeMonkey, although I've never encountered a negative errorlevel in any of my batch-hacking on XP or Vista. Can Mage Hand wield a Shield?

This is so that the IF statement will treat the string as a single item and not as several separate strings. Batch File Raise Error Create a file that contains: call // the file you made cls echo An error occured! pause So now when you start it, it will launch your program I was allowed to enter the airport terminal by showing a boarding pass for a future flight.

It is possible (though not a good idea) to create a string variable called %ERRORLEVEL% (user variable) if present such a variable will prevent the real ERRORLEVEL (a system variable) from

To determine the exact return code the previous command returned, we could use a construction like this: @ECHO OFF IF ERRORLEVEL 1 SET ERRORLEV=1 IF ERRORLEVEL 2 SET ERRORLEV=2 IF ERRORLEVEL more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed batch-file share|improve this question edited Sep 19 '14 at 10:13 Nakilon 20k86389 asked Apr 9 '09 at 14:56 Josh Kodroff 10.3k2173127 1 What command shell will be running your script? Batch File Display Error Message Some Final Polish One small piece of polish I like is using return codes that are a power of 2.

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