Disk space: df, du, inode

Cheat sheet

• df -h free space per partition
• df -i free inodes per partition
• du -xh --max-depth=1 / | sort -h top directories (within one filesystem)
• ncdu / interactive overview
• sudo lsof +L1 deleted-but-open files
• sudo journalctl --vacuum-time=7d trim the system journal
• sudo apt clean clear the package cache