How to read ifconfig in FreeBSD..Help plss

[subba]

Hi,

I have to write console menu set up, where user can change the IP ,
netmask,gateway settings etc.
To Start with i need to read 'ifconfig' and get the 'ip' and 'netmask' and
store it in a file and read the file to get the output. Can somebody help me
in reading the IP and others from ifconfig...
I am trying to use
char *cmd[] = { "ifconfig","-a",(char *)0 }
execv("/sbin/ifconfig,cmd);

If there is a better solution to have the console set up, I would love to
know it...I'd appreciate your help.

Thanks,
Subba
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