I have a batch file. In which, I need to start another copy of itself in a new window with a parameter. I tried the command start "" "%~0" "Param" but it said '"Param"' is not recognized as an internal or external command, operable program or batch file. and didn't start anything. The only way I could get it to work was start %~0 Param , but I figured that would crash if the path had spaces. So What is the correct way to start another instance of the current batch file with parameters?
asked Jan 25, 2019 at 14:42
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Do you mean another additional instance, and the current stay running?– LotPingsCommented Jan 25, 2019 at 16:05
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3 Answers
I would start a second cmd shell, something like:
start "" Cmd.exe %~0 parameters
just to give each iteration of the batch file its own command shell.
Note by OP: I had to do the following:
start cmd.exe /C %~0 parameters
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Exactly what I was looking for, don���t know why I didn’t think of that. Thank you!! Commented Jan 25, 2019 at 16:11
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Actually, this isn't working for me. I had to do start
cmd.exe /C %~0 parametersCommented Feb 15, 2019 at 19:13
In order to call another batch file from a batch file, use call "name of script.bat" or `start "name of script.bat"
Although you can do it without, unexpected results will happen, given that it will continuously call itself.
so technically, you can just write
%0 MyParam
To avoid an infinite loop, check if args are present:
:: Q:\Test\2019\01\25\SU_1298393.cmd
@Echo off
If "%~1" neq "" goto :HasArgs
Echo restart with parms
"%~0" "parms"
:HasArgs
Echo %0 started with %*
Pause
Exit /B
Sample run:
> SU_1298393.cmd
restart with parms
"SU_1298393.cmd" started with "parms"
Press any key to continue . . .
> SU_1298393.cmd foo bar
SU_1298393.cmd started with foo bar
Press any key to continue . . .
