Unix backed up saves?(newb)

[Benon2]

long story short, my world was corrupted(disappeared) and i cant find the backup files.
I cant find the info anywhere else. Please tell me where to find them? (I am a noob )

sorry if there is some prompt i'm not following if there is i will ad it in soon thanks!
(debian is my os)

EDIT there is a template sorry but the only thing that matter is the ftb version which is v1.2.2

EDIT: lol was i supposed to make it bold and ad red !s?

 

[maxpowa]

The launcher never backs up your saves, you are supposed to manually do backups if you are concerned about world corruption. The launcher only backs up configs on major updates.