So i have this shell script that updates my ip everytime it changes but i need some help. THis is what i got: #!/bin/bash wget --http-user= --http-passwd= http://192.168.1.1/st_poe.html printf "GET http://dynamic.registerfly.com/index.php?domain=domain.com&password=mypassword&ipaddress=xxx.xxx.xxx.xxx&host=ICQ&sdd=Save+changes HTTP/1.0\n\n" | nc dynamic.registerfly.com 80 What i need to do is be able to extract the ip from st_poe.html which is saved in the same directory as my script. I then need to be able to put that ip into the printf statement. Im not to good at shell scripting, i had a killer perl script that did this but perl aint working. Any help would be appreciated. Lambo

take a look at sed and regular expressions.

Yeah, sed could make you life easier. Supposing that the line in st_poe.html might look something like this:

myIP = 192.168.100.100

you may use this:

grep myIP ./st_poe.html | sed -e '/s/myIP =//' .

However, I'm not sure how it should be done, if the ip was inserted into html probably. Maybe just put it trough 2 sed's?!


[Edited by - j0seph on November 1, 2004 7:32:02 PM]

Okay,theres two lines in st_poe.htm that im looking at. They are:
<td background="bar_bg.jpg" width="47%"> IP Address:</td>
<td bgcolor="white">69.177.144.44</td></tr>
Some how i need to extract the address into a variable that can then be put into a printf "GET http://dynamic.registerfly.com/index.php?ip=$variable
Lambo

If anyone wants to know how i did it:
#!/bin/bash
rm /root/Desktop/st_poe.htm
wget --http-user=me --http-passwd=1234 http://192.168.1.1/st_poe.htm
ipold="$(cat /root/Desktop/ip.txt)"
ipraw="$(sed -n '97p' st_poe.htm)"
ipmorebetter="${ipraw%</td></tr>}"
ipgood="${ipmorebetter:20}"
echo $ipgood
echo $ipold
if [ "$ipold" != "$ipgood" ]
then
printf "GET http://dynamic.registerfly.com/index.php?domain=domain.com&password=password&ipaddress="$ipgood"&host=www&sdd=Save+Changes HTTP/1.0\n\n" | nc dynamic.registerfly.com 80
printf "GET http://dynamic.registerfly.com/index.php?domain=domain.com&password=password&ipaddress="$ipgood"&host=@&sdd=Save+Changes HTTP/1.0\n\n" | nc dynamic.registerfly.com 80
fi
echo $ipgood > /root/Desktop/ip.txt
This shoudl work with a linksys router but may need to be tweaked a little. Keep in mind the web address of the update page of your dns service may be different.
Lambo

very nice.

You like? I was very proud of myself. Im going to refine it because i dont think it needs to be that long.
Lambo