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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.
Test to uncompress the whole file system. Optionally extract contents of the file to directory.
This option is silently ignored.
This option is silently ignored.
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.

file system was left uncorrected
operation error, such as unable to allocate memory
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