How to use a variable in a path to execute a .bat file

TestQA · 16 Mar 2023

Hi,

I have a requirement where I need to use a variable instead of a full path when I call a bat file.

Example:
var path = "C://xyz/..."
Sys.OleObject("WScript.Shell").Run("cmd /c "" path + myfile.bat"");

The above line doesn't seem to work with 'path' variable but works fine when I add the full path.

Can anyone help with this please.

Thanks

Paul Black · 16 Mar 2023

Hello @TestQA,

TestQA said:

Example:
var path = "C://xyz/..."
Sys.OleObject("WScript.Shell").Run("cmd /c "" path + myfile.bat"")

You need to use set. Something like this EXAMPLE . . .

Code:


@echo off
set "Var_Path=C:/xyz/..."
echo "%Var_Path%"
pause & exit

I hope this helps.

cereberus · 16 Mar 2023

TestQA said:

Hi,

I have a requirement where I need to use a variable instead of a full path when I call a bat file.

Example:
var path = "C://xyz/..."
Sys.OleObject("WScript.Shell").Run("cmd /c "" path + myfile.bat"");

The above line doesn't seem to work with 'path' variable but works fine when I add the full path.

Can anyone help with this please.

Thanks

Variables normally need %signs when used e.g.

%Path%

TestQA · 16 Mar 2023

Thanks for replies. I should have mentioned that the line Sys.OleObject("WScript.Shell").Run("cmd /c "" path + myfile.bat"") is not in bat file but it's a javascript code that calls .bat file.
I am sorry if its not relevant. I think it has something to do with using "" correctly.

LesFerch · 16 Mar 2023

You're missing a + and it's VBScript where you double up double quotes to "escape" them. In JavaScript (or JScript) the escape character is the backslash. However, JavaScript also allows single quotes or double quotes around a string so you don't have to escape the double quotes. Therefore...

"cmd /c "" path + myfile.bat""

should be changed to....

'cmd /c "' + path + 'myfile.bat"'

Tip: Whenever dealing with paths (especially ones containing spaces) always preview your string using alert (if you're in a browser) or wscript.echo if you're outside a browser. Then you will see clearly if you got the command line correct before attempting to run it.