Check if a variable begins with .....

[djokoss22]

Hi guys,
i am trying to script a code that find the ip address of a network card and check if that ip is an APIPA (169.254.x.x)

How can i check if a variable start with "169.254."

Here is what i did but it does not work:

Code: Select all

for /f "tokens=2 delims=:" %%a in ('ipconfig ^|find "IPv4"') do set ipadd=%%a
if "%ipadd:~0,8%"=="169.254." (
echo ERROR: APIPA address found
) else (
ping -n 4 %ipadd%
)

It pings the ip event if it start with 169.254.

Could somebody explain me what i should do?
Thx a lot

[Compo]

If I remember correctly there is a space after the :
So your solution is likely to be "change your ~0,8 to ~1,8"

[aGerman]

You use the colon as delimiter. Check the raw output of IPCONFIG again. I assume there is at least one space between colon and the beginning of the address. Try

Code: Select all

if "%ipadd:~0,9%"==" 169.254." (

Steffen

[djokoss22]

If I remember correctly there is a space after the :
So your solution is likely to be "change your ~0,8 to ~1,8"

In fact, there is a space before the ip address ! The solution is ~1,8
Thx for the help.