发送登录日志邮件

#!/bin/bash

# 生成日志文件
lastlog > /tmp/lastlog.txt
last > /tmp/last.txt

＃ 利用msmtp+mutt发送邮件
mutt -s "`date +%Y/%D` lastlog" [e-mail] < /tmp/lastlog.txt
mutt -s "`date +%Y/%D` last" [e-mail] < /tmp/last.txt

* 只用msmtp发送邮件的方法（手工生成邮件头）：

#!/bin/bash

lastlog > /tmp/lastlog
last > /tmp/last
time=`date +%Y/%D`

# 生成lastlog的邮件
echo "from: [e-mail]" > /tmp/lastlog_mail
echo "to: [e-mail]" >> /tmp/lastlog_mail
echo "subject: $time last" >> /tmp/lastlog_mail
echo "" >> /tmp/lastlog_mail
cat /tmp/lastlog >> /tmp/lastlog_mail

# 生成last的邮件
echo "from: [e-mail]" > /tmp/last_mail
echo "to: [e-mail]" >> /tmp/last_mail
echo "subject: $time last" >> /tmp/last_mail
echo "" >> /tmp/last_mail
cat /tmp/last >> /tmp/last_mail

cat /tmp/lastlog_mail | msmtp [e-mail]
cat /tmp/last_mail | msmtp [e-mail]