Disable shadow group passwords.
The grpunconv command is used to disable shadow group passwords. It moves the password information from the /etc/gshadow file back into the /etc/group file.
grpunconv
Before disabling:
cat /etc/gshadow | grep cdy
cdy:123456::
Disable shadow passwords:
grpunconv
# After execution, /etc/gshadow might be removed or emptied depending on the system configuration.
Check that the password has been copied back to /etc/group:
cat /etc/group | grep cdy
cdy:123456:1000: