I have been missing ncheck and icheck for a very long time; those
would be nice to import, although they might need a bit of updating.

(For those too young to remember, these programs are useful for
locating which inode uses a particular block, so when it goes bad you
can write to it to get it remapped, but also know which file to get
off backups since it now has an incorrect block.)

-- 
        Greg Troxel <gdt@ir.bbn.com>