Questions about batch file, concatenating string and more

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Hello all,
I wrote a small batch file:

@echo off

rem runs the {arg[0].exe} - using its fully qualified name
%~f1

IF %errorlevel% NEQ 0 
(set boolResult=False) 
ELSE 
(set boolResult=True) 


rem case1 
EVENTCREATE /T ERROR /ID 700 /L "MyTest Application" /D "exitcode: %errorlevel%; session id is %SessionName%"

rem case3
EVENTCREATE /T ERROR /ID 700 /L APPLICATION /D "exitcode: %boolResult%; session id is %SessionName%"

rem case4 
EVENTCREATE /T ERROR /ID 700 /L APPLICATION /D "exitcode: %errorlevel%; session id is %SessionName%"

And I have got some questions, if you could help me out...

1. case1: I get the following error:
ERROR: 'MyTest Application' log does not exist. Cannot create the event.
The only way to initial eventlog in through high-level (c#) code?

2. case3: How can I concatenate a string with some bat variable ?

3. case4: How do I add a newline in the description?
"exitcode: %boolResult%\n session id is %SessionName%"
didn't do that.

Thanks for any assistance

Posted 26-May-10 22:37pm

elad2109

Updated 27-May-10 2:09am

Moak

v2

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Dr.Walt Fair, PE · Answer 1 · 2010-06-24T18:10:00

I haven't used batch files for awhile, but here's how it used to work.

1) If eventlog just needs to be a blank file, then you can create one by using ECHO redirected to a file name. If it needs to be some special format, then you'll need to either copy an existing file or use anotehr method.

2) Usually you just put %1 for commandline parameters and %varname% for environment variables and the batch processor replaces %1 and %varname% with the corresponding parameter string.

3) Not sure how to do that.