CMD variable is not processed. How to fix

The following statement shows different results when run from NetScan and from command prompt:

cmd /k set "target=10.10.7.7" & set tmp=%temp% & echo %target% & echo %tmp%

From NetScan:

cmd /k set "target=10.10.7.7" & set tmp=%temp% & echo %target% & echo %tmp%

%target%
C:\Users\mike\AppData\Local\Temp\NetScanPortableTemp

From CMD window:

set "target=10.10.7.7" & set tmp=%temp% & echo %target% & echo %tmp%

10.10.7.7
C:\Users\mike\AppData\Local\Temp\NetScanPortableTemp

This issue is not connected to Network Scanner. It is just how the command processor evaluates environment variables. For example, open a new command prompt and type the above statement. It will result in something like this, where in the first set of commands the variable is not evaluated:



To work around this, you need delayed variable expansion and a different syntax, like this:

cmd /V /k set "target=10.10.7.7" & set tmp=%temp% & echo !target! & echo %tmp%

Here /V turns on the delayed expansion and !target! refers to a delayed-expansion variable. I also recommend using && instead of & to ensure the commands continue executing only if all prior commands succeeded.