Usage:
 fsck.cramfs [options] <file>

Check and repair a compressed ROM filesystem.

Options:
 -a                       for compatibility only, ignored
 -v, --verbose            be more verbose
 -y                       for compatibility only, ignored
 -b, --blocksize <size>   use this blocksize, defaults to page size
     --extract[=<dir>]    test uncompression, optionally extract into <dir>

 -h, --help               display this help
 -V, --version            display version

For more details see fsck.cramfs(8).