为啥我的Linux里的mail没有-c参数？

Question

```mail -s "mail" -c [e-mail] [e-mail] < mail.txt

```mail: unrecognized option '-c'您在 /var/mail/root 中有邮件

wo'ku

Answer 1

https://blog.csdn.net/weixin_30773135/article/details/99327488