无法修改密码：Authentication token manipulation error
root@VM:/etc/pam.d# passwd ubuntu passwd: Authentication token manipulation error passwd: password unchanged
解决方案：
将以下行注释 # password requisite pam_pwquality.so minlen=8 ucredit=-1 lcredit=-1 dcredit=-1 ocredit=-1
成功：
标签：passwd,error,token,Authentication,manipulation,pam From： https://www.cnblogs.com/yxy-linux/p/17502975.html