"unix shell"-alike book underneath windows

i need assistance shell-script gurus out there.

i have .txt record (log) traces ip addresses clients several lines, format identical one:

line1 - fan ip [192.168.0.1] data
line2 - fan ip [192.168.0.2] data
line3 - fan ip [192.168.0.3] data
line4 - fan ip [192.168.0.2] data
line5 - fan ip [192.168.0.1] data
...

i need emanate book that:

• extracts ip addresses file


• groups ip addresses (the same ip castle reported wholly once)


• outputs record indirect ip addresses

for before example, indirect record be:

192.168.0.1
192.168.0.2
192.168.0.3

i am windows os, nonetheless i collection (that yield unix-like commands grep, sort, etc. underneath windows).

a fortitude but scripting good well.

thanks lay your help.