vim /etc/mail.rc

set from=1968089885@qq.com smtp="smtp.qq.com"
set smtp-auth-user="1968089885@qq.com" smtp-auth-password="123456"
set smtp-auth=login

% mail --h
 mail: illegal option -- -
Usage: mail -eiIUdEFntBDNHRV~ -T FILE -u USER -h hops -r address -s SUBJECT -a FILE -q FILE -f FILE -A ACCOUNT -b USERS -c USERS -S OPTION users

% mail -s "测试" 1968089885@foxmail.com

% mail -s "邮件主题" 1968089885@foxmail.com < /data/findyou.txt

% echo "邮件正文内容" | mail -s "邮件主题" 1968089885@foxmail.com

% cat /data/findyou.txt | mail -s "邮件主题" 1968089885@foxmail.com

% mail -s "邮件主题" 1968089885@foxmail.com -a /data/findyou.tar.gz < /data/findyou.txt

#!/bin/bash
 #author:findyou
 help(){
  echo "eg: $0 [Subject] [address] [content_file] [file]"
  echo ""
  exit 1
 }

if [ ! -n "$1" ] ; then
   help
fi

 cDate=`date +%Y%m%d`

if [ ! -n "$2" ] ; then
   help
else
   mail_to=$2
   echo "   Send Mail to ${mail_to}"
fi

if [ ! -n "$4" ] ; then
   mail -s $1 ${mail_to}<$3
else
   mail -s $1 -a $4 ${mail_to}<$3
fi

[root@123]$ ./sendmail.sh test 1968089885@qq.com abc.txt
    Send Mail to 1968089885@qq.com
 [root@123]$