debugfs

An interactive ext2/ext3/ext4 filesystem debugger. More information: https://manned.org/debugfs.

• 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