# echo 'utf8'|passwd zhangsan --stdin
Changing password for user zhangsan.
passwd: Have exhausted maximum number of retries for service
可以尝试改用密码chpasswd修改zhangsan的密码：
echo 'zhangsan:utf8' |chpasswd
有可能就可以了
# echo 'utf8'|passwd zhangsan --stdin
Changing password for user zhangsan.
passwd: Have exhausted maximum number of retries for service
可以尝试改用密码chpasswd修改zhangsan的密码：
echo 'zhangsan:utf8' |chpasswd
有可能就可以了
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