修改密码报错：passwd: Authentication token manipulation error

#%PAM-1.0

auth    required   pam_stack.so service=system-auth

account  required   pam_stack.so service=system-auth

password  required   pam_stack.so service=system-auth

password required pam_cracklib.so dcredit=-1 ucredit=-1 ocredit=-1 lcredit=-1 minlen=6

password required pam_unix.so use_authtok nullok md5

password required pam_unix.so remember=5 use_authtok

最后这三行有些老系统不支持，设置后也会导致上面的报错

#%PAM-1.0

# This file is auto-generated.

# User changes will be destroyed the next time authconfig is run.

auth    required   /lib/security/$ISA/pam_env.so

auth    sufficient  /lib/security/$ISA/pam_unix.so likeauth nullok

auth    required   /lib/security/$ISA/pam_deny.so

account   required   /lib/security/$ISA/pam_unix.so

account   sufficient  /lib/security/$ISA/pam_succeed_if.so uid < 100 quiet

account   required   /lib/security/$ISA/pam_permit.so

password  requisite   /lib/security/$ISA/pam_cracklib.so retry=3

password  sufficient  /lib/security/$ISA/pam_unix.so nullok use_authtok md5 shadow

password  required   /lib/security/$ISA/pam_deny.so

session   required   /lib/security/$ISA/pam_limits.so

session   required   /lib/security/$ISA/pam_unix.so