Q:

Using regex to extract string after certain number of characters

How do I extract the string after certain number of characters?
Eg. 0    HOPOPT          IPv6 Hop-by-Hop Option              Y        [RFC2460]
I want to select the highlighted part which is every character after 57th character. I need to make a replace in Sublime editor and have to specifically select the highlighted portion, how can I do that?

A:

This should work:
.{57}(.*)

Everything after the 57th character will be captured in group 1. 
Alternatively, if your platform supports it, you can use a lookbehind:
(?<=.{57}).*

Using sublime, simply press Ctrl+F to bring up the find options, select the regex option (.*) and enter in one of the above regular expressions. Here's a screenshot (with slightly modified regular expression, since what you say you want to hightlight actually appears to begin at the 32nd character.)

