Projection password used to close the group
grpunconv command is used to turn off the projection password of the group. It will save the password from the gshadow file back to the group file.
grpunconvNot closed
cat /etc/gshadow | grep cdy
cdy:123456::Turn off shadow password
cat /etc/gshadow
cat: /etc/gshadow: No such file or directoryCheck that the password has been copied to /etc/group.
cat /etc/group | grep cdy
cdy:123456:1000: