Which character in the password field of /etc/passwd is used to indicate that the encrypted password is stored in /etc/shadow?

The password field of /etc/passwd is used to store the user’s encrypted password or a special

character that indicates how the password is stored. In older Linux systems, the user’s encrypted

password was stored in the /etc/passwd file. On most modern systems, this field is set to x, and the

user password is stored in the /etc/shadow file12. The /etc/shadow file is more secure than the

/etc/passwd file because it is readable only by the root user and not by regular users1. The other

options are not valid characters for the password field of /etc/passwd. Reference:

Understanding the /etc/passwd File | Linuxize

Understanding the /etc/passwd File - GeeksforGeeks