cracklib: cracklib (password crack library) cracklib: cracklib: CrackLib is a library containing a C function (well, lots of functions cracklib: really, but you only need to use one of them) which may be used in a cracklib: "passwd"-like program. cracklib: cracklib: The idea is simple: try to prevent users from choosing passwords that cracklib: could be guessed by "Crack" by filtering them out, at source. cracklib: cracklib: cracklib: