Help me with the syntax of this bat file that changes my ip address

netsh interface ip set address name="Wireless
Network Connection" static 192.168.1.64
255.255.255.0
192.168.1.%RANDOM% * (%300% - %1% + 1);

#//192.168.1.254
#//%RANDOM% * (%888% - %01% + 1)
#//%RANDOM% * (%maxval% - %minval% + 1) / 32768 + %minval%;

Wont work, and in shell scripting what makes the line dormant? the # or // ?

I will ask one of our programming experts, he may not be checking this section of the forums.

GokAy said:

I will ask one of our programming experts, he may not be checking this section of the forums.

Let me know what he says

Hi Delta,

I'm finding it difficult to help you as you haven't yet explained what your batch file is to do, or the problem/s you are having with your current script (there are quite a few). And the batch file you've posted makes it none the clearer to me of your intent: # and // at the beginning of a command line is nothing more than a syntax error to me.

Meanwhile, this may help -- here is a small example of a batch file that changes one's IP address to 192.168.1.x, where x is any integer between 10 and 255 (inclusive).

Code:

@echo off

set interface_name="Wireless Network Connection"
set ipaddr_front=192.168.1
set /a ipaddr_end=(255 * %RANDOM%)/32768+10
set subnet_mask=255.255.255.0

netsh interface ip set address %INTERFACE_NAME% static %IPADDR_FRONT%.%IPADDR_END% %SUBNET_MASK%

Thanks for your input Pyprohly.

255 should not be included (for this case), it is the broadcast address for the network for this subnet mask (255.255.255.0). (the last IP in the subnet is broadcast, so may be different for classless networks). Say, for example, for 255.255.0.0 subnet you can have an IP ending as 0.255 or 1.255 etc but not 255.255

@GokAy Have I made an obvious mistake somewhere? Please elaborate if so.

Sorry for not being clear about it.

where x is any integer between 10 and 255 (inclusive).

It should be 254 max in this case. So,

Code:

set /a ipaddr_end=(255 * %RANDOM%)/32768+10

should be

Code:

set /a ipaddr_end=(254 * %RANDOM%)/32768+10

right?

And something I noticed right now, if you are adding 10 by default, it should be 244 instead?

I get %RANDOM% returns an integer between 0 (or 1?) and 32768?

Ok, did some searching and it is 0-32768.

Also found this,

what do you think about?

Code:

set /a ipaddr_end=%RANDOM% %%244 +10

I tested in cmd, there %RANDOM% % 244+10 seem to work (single % before 244 instead of %% in script)

Pyprohly said:

Hi Delta,

I'm finding it difficult to help you as you haven't yet explained what your batch file is to do, or the problem/s you are having with your current script (there are quite a few). And the batch file you've posted makes it none the clearer to me of your intent: # and // at the beginning of a command line is nothing more than a syntax error to me.

Meanwhile, this may help -- here is a small example of a batch file that changes one's IP address to 192.168.1.x, where x is any integer between 10 and 255 (inclusive).

Code:

@echo off

set interface_name="Wireless Network Connection"
set ipaddr_front=192.168.1
set /a ipaddr_end=(255 * %RANDOM%)/32768+10
set subnet_mask=255.255.255.0

netsh interface ip set address %INTERFACE_NAME% static %IPADDR_FRONT%.%IPADDR_END% %SUBNET_MASK%

This is the original script

netsh interface ip set address name="Wireless Network Connection" static 192.168.1.64 255.255.255.0 192.168.1.254;

its supposed to change any variable inbetween each dot within each address