Na página man, aqui estão os sinalizadores que pwdadm -c pode remover:
NOCHECK
Signifies that new passwords need not follow the guidelines
established in the /etc/security/user file for password composition.
ADMIN
Specifies that password information may be changed only by the
root user. Only the root user can enable or disable this attribute.
ADMCHG
Resets the ADMCHG attribute without changing the user's password.
This forces the user to change passwords the next time a login
command or an su command is given for the user. The attribute is
cleared when the user specified by the User parameter resets the
password.