It\'s a pretty simple problem, I just can\'t find the Lxss folder in LocalAppData which is suppose to store files from the Bash on Ubuntu on Win
It was actually moved in the latest release to :
C:\Users\%USERNAME%\AppData\Local\Packages\CanonicalGroupLimited.UbuntuonWindows_79rhkp1fndgsc\LocalState\rootfs\
See this blog post from WLS git repo
You have to uncheck "Hide protected operating system files (recommended)" in the folder options window.
In the latest version of Windows Fall Creator Update, I found it in C:\Users\%USERNAME%\AppData\Local\lxss\
The selected solution is old and valid for Ubuntu only.
For Opensuse leap-15.1 users this is different:
C:\Users\"yourusername"\AppData\Local\Packages\46932SUSE.openSUSE-Leap-15-1_022rs5jcyhyac\LocalState\rootfs
The numbers will differ from version to version and may change in the future.
The trick is to look for something related to Linux in C:\Users\"yourusername">\AppData\Local\Packages\"xxxxx"\LocalState\root\fs
where