Canon (crw) raw photo file recovery utility
dccleancrw crw_0001.crw crw_0002.crw ...
Because they are parsed from the end, Canon CRW files become unreadable if garbage data is appended to them, as often happens when files are recovered from damaged media. This program truncates CRW files to the correct size.
Written by Dave Coffin.
man page by Steve King for debian.