cmd array populating empty

Asked Mar 12 '22 at 17:50

Active Mar 13 '22 at 12:38

Viewed 24 times

This is giving me little headache.

I fillup an array with ip adresses and hostnames. When filling the array the corresponding element shows added to the array.

Data for sentinels.txt:

127.0.0.1 loopback 192.168.100.102 printer

When populating the array afterwards it is empty??

    SET /a HostCount=0
    FOR /F "tokens=1,2 delims= " %%A in (Sentinels.txt) DO (
    SET ListHosts[%HostCount%]=%%A
    ECHO !HostCount! !ListHosts[%HostCount%]!
    )

    REM Check if array ListHosts is empty
    IF not "%ListHosts%"=="" (
    FOR /f %%i IN (%ListHosts%) DO (
    ECHO %%i
    )           
    )

Thanks in advance, I need the solution to be compatible with an array, a shown in the sample code, the existing questions here are all using a list example.

edited Mar 13 '22 at 12:38

Stephan

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asked Mar 12 '22 at 17:50

Steev

Windows CMD.EXE batch file language does not have 'arrays' that work as you seem to imagine. – Michael Harvey Mar 13 '22 at 09:37
In no moment you increase the array value, you should use something like: set HostCount+=1 also no point in checking "%ListHosts%"=="" cause the variable doesn't seem to be created... – Ricardo Bohner Mar 13 '22 at 12:58
@RicardoBohner `set /a HostCount+=1` maybe? – Michael Harvey Mar 14 '22 at 20:17
@Michael Harvey exactly – Ricardo Bohner Mar 14 '22 at 20:21

cmd array populating empty

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