pwconv, pwunconv, grpconv, grpunconv commands

pwconv, pwunconv, grpconv, grpunconv - convert to and from shadow passwords and groups

pwconv

pwconv creates shadow from passwd and an optionally existing shadow.For more details and options check pwconv mapage.For pwconv man page click here

pwunconv

pwunconv creates passwd from passwd and shadow and then removes shadow.For more details and options check pwunconv mapage.For pwunconv man page click here

grpconv

grpconv creates gshadow from group and an optionally existing gshadow.For more details and options check grpcon mapage.For grpcon man page click here

grpunconv

grpunconv creates group from group and gshadow and then removes gshadow.For more details and options check grpuncon mapage.For grpuncon man page click here

These four programs all operate on the normal and shadow password and group files: /etc/passwd, /etc/group, /etc/shadow, and /etc/gshadow.