I've recently install Elementary OS on my PC and i mistakenly installed a program named "mount management", apparently it changed my file-system permission or i guess it does (because i checked theme with live Linux and all of their owner set to root user) and on start-up it gave me permission denied error:
mountall: mount / :permission denied
and bunch of other permission denied errors and it obviously hang.
My question is:
Is there any chown or chmod command which i can run on my linux live(recovery mod is read-only) to correct that partion permission (although i checked them all their owner is root) ?