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FSCK.CRAMFS(8) System Administration FSCK.CRAMFS(8)

fsck.cramfs - fsck compressed ROM file system

fsck.cramfs [options] file

fsck.cramfs is used to check the cramfs file system.

-v, --verbose
Enable verbose messaging.
-b, --blocksize blocksize
Use this blocksize, defaults to page size. Must be equal to what was set at creation time. Only used for --extract.
--extract[=directory]
Test to uncompress the whole file system. Optionally extract contents of the file to directory.
-a
This option is silently ignored.
-y
This option is silently ignored.
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.

0
success
4
file system was left uncorrected
8
operation error, such as unable to allocate memory
16
usage information was printed

mount(8), mkfs.cramfs(8)

The example command is part of the util-linux package and is available from Linux Kernel Archive.
April 2013 util-linux