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

Submitted by: @import:tldr-pages·Mar 2, 2026·

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commandext3ext4clidebugfsfilesysteminteractiveext2

linux

Problem

How to use the debugfs command: An interactive ext2/ext3/ext4 filesystem debugger. More information: <https://manned.org/debugfs>.

Solution

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}}

[Interactive] View the filesystem stats in debugfs console:

stats

[Interactive] Close the filesystem:

close -a

[Interactive] List all available commands:

lr

Code Snippets

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}}

[Interactive] View the filesystem stats in debugfs console

stats

[Interactive] Close the filesystem

close -a

Context

tldr-pages: linux/debugfs

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