---
name: "fsextinfo"
section: "1"
platform: "linux"
package: "libfsext-utils"
version: "20240501-1+b1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/fsextinfo"
---

# fsextinfo(1)

determines information about an Extended File System (ext) volume

## NAME

**fsextinfo** – determines information about an Extended File System (ext) volume

## SYNOPSIS

**fsextinfo** \[**-B** *bodyfile*\] \[**-E** *inode\_number*\] \[**-F** *path*\] \[**-o** *offset*\] \[**-dhHvV**\] *source*

## DESCRIPTION

**fsextinfo** is a utility to determine information about an Extended File System (ext) volume

**fsextinfo** is part of the **libfsext** package. **libfsext** is a library to access the Extended File System (ext) format

*source* is the source file.

The options are as follows:

- **-B** *bodyfile*

  output file system information as a bodyfile

- **-d**

  calculate a MD5 hash of a file entry to include in the bodyfile

- **-E** *inode\_number*

  show information about a specific inode or "all"

- **-F** *path*

  show information about a specific file entry path

- **-h**

  shows this help

- **-H**

  shows the file system hierarchy

- **-o** *offset*

  specify the volume offset

- **-v**

  verbose output to stderr

- **-V**

  print version

## ENVIRONMENT

None

## FILES

None

## EXAMPLES

```
# fsextinfo ext4.raw
fsextinfo 20220727

Extended File System information:

Volume information:
        File system                     : ext4
        Label                           : ext4_test
        Compatible features             : 0x0000003c
                Has journal (EXT3_FEATURE_COMPAT_HAS_JOURNAL)
                Have extended inode attributes (EXT2_FEATURE_COMPAT_EXT_ATTR)
                Resizable volume (EXT2_FEATURE_COMPAT_RESIZE_INO)
                Use directory hash index (EXT2_FEATURE_COMPAT_DIR_INDEX)

        Incompatible features           : 0x000002c2
                Has directory type (EXT2_FEATURE_INCOMPAT_FILETYPE)
                Has extents (EXT4_FEATURE_INCOMPAT_EXTENTS)
                Has 64-bit support (EXT4_FEATURE_INCOMPAT_64BIT)
                (EXT4_FEATURE_INCOMPAT_FLEX_BG)

        Read-only compatible features   : 0x0000046b
                Has sparse superblocks and group descriptor tables (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
                Contains large files (EXT2_FEATURE_RO_COMPAT_LARGE_FILE)
                (EXT4_FEATURE_RO_COMPAT_HUGE_FILE)
                (EXT4_FEATURE_RO_COMPAT_DIR_NLINK)
                (EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE)
                (EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)

        Number of inodes                : 1024
        Last mount path                 : /mnt/ext4
        Last mount time                 : Jul 22, 2021 14:07:32 UTC
        Last written time               : Jul 22, 2021 14:07:33 UTC

```

## DIAGNOSTICS

Errors, verbose and debug output are printed to stderr when verbose output -v is enabled. Verbose and debug output are only printed when enabled at compilation.

## BUGS

Please report bugs of any kind to \<joachim.metz@gmail.com\> or on the project website: https://github.com/libyal/libfsext/

## AUTHOR

These man pages were written by Joachim Metz.

## COPYRIGHT

Copyright 2010-2022, Joachim Metz \<joachim.metz@gmail.com\>. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

## SEE ALSO