Password Banner while changing the password in Linux

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One of the solutions is to create a file /etc/motd_passwd_warning with your warning. Here “Your Password Minimum Requirements”.

[root@localhost ~]# cat /etc/motd_passwd_warning
Your Password Minimum Requirements

Then to change the /etc/pam.d/passwd in adding the following line :
password optional pam_echo.so file=/etc/motd_passwd_warning

[root@localhost ~]# cat /etc/pam.d/passwd
#%PAM-1.0
auth include system-auth
account include system-auth
password optional pam_echo.so file=/etc/motd_passwd_warning
password substack system-auth
-password optional pam_gnome_keyring.so use_authtok
password substack postlogin
And that is all.
Here is the result :
[root@localhost ~]# passwd
Changing password for user root.
Your Password Minimum Requirements
New password:
BAD PASSWORD: it is based on a dictionary word
Retype new password:
passwd: all authentication tokens updated successfully


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