# umount # Unlink a filesystem from its mount point, making it no longer accessible. # A filesystem cannot be unmounted when it is busy. # More information: <https://manned.org/umount.8>. # Unmount a filesystem, by passing the path to the source it is mounted from: umount path/to/device_file # Unmount a filesystem, by passing the path to the target where it is mounted: umount path/to/mounted_directory # Unmount all mounted filesystems (except the `proc` filesystem): umount -a $Follow @igor_chubin cheat.sh tldr