# debugfs > An interactive ext2/ext3/ext4 filesystem debugger. > More information: . - Open the filesystem in read only mode: `debugfs {{/dev/sdXN}}` - Open the filesystem in read write mode: `debugfs -w {{/dev/sdXN}}` - Read commands from a specified file, execute them and then exit: `debugfs -f {{path/to/cmd_file}} {{/dev/sdXN}}` - View the filesystem stats in debugfs console: `stats` - Close the filesystem: `close -a` - List all available commands: `lr`