replace IP address in file

Question

I want to replace IP addresses in a file. Example file

255.255.255.22<
255.255.255.222<
255.255.255.22;
255.255.255.222;

The files are config files. Say, I need to replace 255.255.255.22 but not 255.255.255.222. The IP to be replaced may have either ; or < after the IP. Using .\\d{1,3}\\D in a search and replace I end up losing the character after the IP.

Answer 1

Try this:

"(\d{1,3}\\.){3}(\d{2})(?=[<;])"

if you want to match IP's with 1-3 digits at the end.

try this:

"(\\d{1,3}\\\\.){3}(\\d{1,3})(?=[<;])"