IP Address

paddyjoy · 07-25-2005, 06:24 AM

Does anyone have any ideas how I can use script to obtain the IP address of the machine it is run on? I have looked through the bash environment variables but can't find anything that might help. Basically I have a dynamic IP with my ISP and I'm trying to write a script that will ftp my ip address in a txt to a different location every hour or so.

Paddy

Bruce Hill · 07-25-2005, 06:46 AM

To get your IP address from cli >
lynx -dump http://whatismyip.com | awk '/Your/ {print $4}'

Razze · 07-25-2005, 06:56 AM

You can also take a look at www.dyndns.org. There you can link a dynamic ip to a static computer name.

paddyjoy · 07-25-2005, 07:05 AM

Thanks for the help. I have edited your command slightly so that I can get the ip address from the output of the ifconfig command like this.

Code:

ifconfig eth1 | awk '/Bcast/ {print $3}' | tail -c 15

Paddy

Bruce Hill · 07-25-2005, 07:20 AM

That wouldn't do me any good.

Code:

mingdao@james:~$ /sbin/ifconfig eth0 | awk '/Bcast/ {print $3}' | tail -c 15
:192.168.1.255

paddyjoy · 07-25-2005, 07:54 AM

Yeah I suppose if you are behind a router it wouldn't be much use but in my case my computer is plugged directly into my modem so works for me.

Paddy