PWUNCONV(8) (System Management Commands) (NAME) pwunconv - shadow passwd (SYNOPSIS) pwconv [options] pwunconv [options] grpconv [options] grpunconv [options] (DESCRIPTION) pwconv shadow passwd shadow . pwunconv passwd passwd shadow shadow . grpconv gshadow group gshadow . grpunconv group group gshadow gshadow . : /etc/passwd /etc/group /etc/shadow /etc/gshadow. . pwconv grpconv . . `x' . . `x' . . pwconv /etc/shadow PASS_MIN_DAYS PASS_MAX_DAYS PASS_WARN_AGE /etc/login.defs . pwunconv grpunconv . . . . pwunconv . (OPTIONS) pwconv pwunconv grpconv grpunconv : -h, --help . -R, --root CHROOT_DIR CHROOT_DIR CHROOT_DIR. . (BUGS) ( ) . pwck grpck . (CONFIGURATION) /etc/login.defs grpconv grpunconv : MAX_MEMBERS_PER_GROUP (number) . ( ) /etc/group ( GID) . 0 . ( split group) . NIS . 25 . : ( Shadow) . . /etc/login.defs pwconv : PASS_MAX_DAYS (number) . . -1 ( ). PASS_MIN_DAYS (number) . . 0 ( ). PASS_WARN_AGE (number) . -1 . . (FILES) /etc/login.defs (Shadow). (SEE ALSO) grpck(8), login.defs(5), pwck(8). shadow-utils 4.17.4 04/19/2025 PWUNCONV(8)