How to configure pam in linux such that the login id and password should not be same? -

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How to configure Palm in Linux, like login ID and password should not be the same?

Forward the passwdqc module using Ubuntu: 

  $ Sudo apt-get install libpam-passwdqc Then, after modifying the /etc/pam.d/common-password file, modifies it by adding the next line:  
  password expected pam_passwdqc.so Config = / Etc / passwdqc.conf  
 
 and add it to the /etc/passwdqc.conf file: 
 
  same = deny

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