Liagk-
The primary resource for learning about translating WordPress files is here: https://codex.wordpress.org/Translating_WordPress
Also, some helpful forum threads:
https://buddypress.org/forums/topic.php?id=171
https://buddypress.org/forums/topic.php?id=1877
Finally, when you’ve completed your translation, it would nice if you would add and link in the codex: https://codex.buddypress.org/translations/
Hey, I translated BuddyPress yesterday!
You can find my translation here: https://codex.buddypress.org/translations/greek-ellinika-el_gr/
I hope you like it, because I was exhausted after the hours I spent working on it. 
P.S. Ki egw Ellhnas eimai.
Aderfe to link ayto http://rcc1.x10hosting.com/bp-greek.zip den paizei . Mporeis na mas pei apo poy tha to paroyme to arxeio ?
The link is broken. Kapoy alloy h ekklhnikh metafrsh?
Has anybody found the correct link for Greek language yet?
If yes let us know.
Hello to all.
Finally greek translation is still shared? If yes, where can we find it?
Thanks
Who made this translation anyway?