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Table of Contents
Disk Usage
Show the Disk Usage
df -h
File System Usage
Show the current file system usage of each subdirectory of the root directory
du -hs /*
Show file system usage of the current directory
du -hs ./*
When They Don't Match
When the df and du commands return different results, lsof is your friend!
Sometimes, files get ‘unlinked’ from the filesystem. They could have been deleted but held open by a process. You can find them by typing
sudo lsof | grep deleted
or perhaps
sudo lsof | grep DEL
Sometimes you can find a process is holding onto a file so you can kill it, or try a reboot.