hi

is there is any command that retrieves the IP address of a machine. Also is there any function in c that does the same.

thankx

Depends on the exact os and on how the box is configured. Also a box can have many ip addresses. With any fully qualified domain name, you can lookup the ip addresses. Can we assume that you know the fqdn?

One exception: the machine's ip address is 127.0.0.1. Every system can contact itself using this address.

While Perderabo is right about the myriad of configurations a given box can have, on just about every Unix I've dealt with, 'ifconfig -a' will list the configuration, including IP address, for all your network interfaces. Dunno about the C function.

Also, it's certainly possible to configure a machine with no loopback interface. On BSD for example, just run 'ifconfig lo0 delete'. Of course, that'll probably break a lot of stuff ;-)

#
#
# uname -srm
HP-UX B.11.11 9000/800
# ifconfig -a
ifconfig: no such interface
#

Originally Posted by vertigo23 Also, it's certainly possible to configure a machine with no loopback interface. On BSD for example, just run 'ifconfig lo0 delete'.

ipconfig/all

"ipconfig -an"