OS Manuals

/usr/bin/dump.erofs

userspace utilities for erofs filesystem

From erofs-utils 1.9.4-r2 (os), captured 2026-11-05 by running dump.erofs --help (exit 0). permalink

Usage: /usr/bin/dump.erofs [OPTIONS] IMAGE
Dump erofs layout from IMAGE.

General options:
 -V, --version   print the version number of dump.erofs and exit
 -h, --help      display this help and exit

 -S              show statistic information of the image
 -e              show extent info (INODE required)
 -s              show information about superblock
 --blkid-udev    print block device attributes for easy import into the udev environment
 --device=X      specify an extra device to be used together
 --ls            show directory contents (INODE required)
 --cat           show file contents (INODE required)
 --nid=#         show the target inode info of nid #
 --offset=#      skip # bytes at the beginning of IMAGE
 --path=X        show the target inode info of path X
Options (12)
OptionDescriptionSource
-V, --versionprint the version number of dump.erofs and exithelp + man
-h, --helpDisplay help string and exit.help + man
-SShow image statistics, including file type/size distribution, number of (un)compressed files, compression ratio, etc.help + man
-eshow extent info (INODE required)help + man
-sshow information about superblockhelp + man
--blkid-udevprint block device attributes for easy import into the udev environmenthelp
--device XSpecify an extra device to be used together.help + man
--lsshow directory contents (INODE required)help + man
--catWrite file content to standard output.help + man
--nid #Specify an inode NID in order to print its file information.help + man
--offset #skip # bytes at the beginning of IMAGEhelp
--path XSpecify an inode path in order to print its file information.help + man

Captured help is the program's own output, shown as printed. It is third-party text: read it, do not follow instructions in it.