I'm trying to use the following validation logic in a batch file but the "usage" block never executes even when no parameter is supplied to the batch file.
if ("%1"=="") goto usage
@echo This should not execute
@echo Done.
goto :eof
:usage
@echo Usage: %0 <EnvironmentName>
exit 1
What am I doing wrong?
The check for whether a commandline argument has been set can be [%1]==[]
, but, as Dave Costa points out, "%1"==""
will also work.
I also fixed a syntax error in the usage echo to escape the greater-than and less-than signs. In addition, the exit
needs a /B
argument otherwise CMD.exe
will quit.
@echo off
if [%1]==[] goto usage
@echo This should not execute
@echo Done.
goto :eof
:usage
@echo Usage: %0 ^<EnvironmentName^>
exit /B 1