Crack keepass2 passwords with:
keepass2john dataset.kdbx > dataset.john
john dataset.johnCrack shadow files:
# First obtain the passwd and shadow files
unshadow passwd shadow > file_to_crack
john --wordlist=/usr/share/wordlists/rockyou.txt file_to_crack --users=USERList available formats
john --list=formats | grep <KEYWORD>
#example
john --list=formats | grep bcrypt