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I need help locating the specific file that has filled my root partition and the cause of inconsistent file storage usage. this is the output of my df -h

Filesystem Size Used Avail Use% Mounted on udev 3.8G 0 3.8G 0% /dev tmpfs 767M 1.9M 765M 1% /run /dev/sda5 85G 81G 7.5M 100% / tmpfs 3.8G 0 3.8G 0% /dev/shm tmpfs 5.0M 8.0K 5.0M 1% /run/lock /dev/sda8 7.5G 3.9M 7.0G 1% /tmp /dev/sda5 85G 81G 7.5M 100% /.snapshots /dev/sda5 85G 81G 7.5M 100% /srv /dev/sda6 16G 1.7G 13G 12% /var /dev/sda5 85G 81G 7.5M 100% /root /dev/sda5 85G 81G 7.5M 100% /usr/local /dev/sda5 85G 81G 7.5M 100% /var/lib/accountsservice /dev/sda5 85G 81G 7.5M 100% /var/lib/gdm3 /dev/sda1 502M 320K 502M 1% /boot/efi /dev/sda9 184G 179G 2.5G 99% /home tmpfs 767M 152K 767M 1% /run/user/130 tmpfs 767M 176K 767M 1% /run/user/1000 

how is it possible to have a / partition size of 85GB and 81GB in use and an available size is 7.5M.?.Still I can't operate my Linux normally due to this condition.

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  • "how is it possible to have a / partition size of 85GB and 81GB in use and an available size is 7.5M" => unix.stackexchange.com/a/352080/70524, unix.stackexchange.com/q/7950/70524 Commented Aug 23, 2023 at 8:43
  • Your problem is not the difference between the partition size and the available space, your problem is the filling-up to 100% of the root partition. The question is closed because the first already has an answer. A bit harsh, I think. Ask the question again, but now "how do I find what is filling-up my root partition" Commented Aug 23, 2023 at 9:35
  • apologies, for the tone used. I would like to ask if this current problem exist also on btrfs file system because it's the filesystem I use on my laptop. can I re-edit the question. Commented Aug 23, 2023 at 13:02
  • and I can say I have noticed my free space at least reaching 3GB, so am guessing it might not be a problem of reserved space Commented Aug 23, 2023 at 13:15
  • If there is a single large file using too much space, you can find it with find / -xdev -printf "%s %p\n" | sort -n Commented Aug 23, 2023 at 15:24

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