shell编程基础-sendmail

Posted 2020-08-30 sunziying

linux sendEmail工具的安装使用

 

 1.下载文件

　　#wget  http://files.cnblogs.com/files/sunziying/sendEmail-v1.56.tar.gz

2.安装

　　#yum install sendemail

3.命令参数详解

[root@li229-122 scripts]# sendEmail --help
sendEmail-1.56 by Brandon Zehm <[e-mail]>
Synopsis:  sendEmail -f ADDRESS [options]

Required:
-f ADDRESS                from (sender) email address（发送人邮箱）
* At least one recipient required via -t, -cc, or -bcc
* Message body required via -m, STDIN, or -o message-file=FILE

Common:
-t ADDRESS [ADDR ...]     to email address(es)（接收人邮箱）
-u SUBJECT                message subject（主题）
-m MESSAGE                message body（正文）
-s SERVER[:PORT]          smtp mail relay, default is localhost:25（发件人邮箱的SMTP服务器）

Optional:
-a   FILE [FILE ...]      file attachment(s)（附件）
-cc  ADDRESS [ADDR ...]   cc  email address(es)
-bcc ADDRESS [ADDR ...]   bcc email address(es)
-xu  USERNAME             username for SMTP authentication（发件人邮箱的用户名）
-xp  PASSWORD             password for SMTP authentication（发件人邮箱的密码）

Paranormal:
-b BINDADDR[:PORT]        local host bind address
-l LOGFILE                log to the specified file
-v                        verbosity, use multiple times for greater effect
-q                        be quiet (i.e. no STDOUT output)
-o NAME=VALUE             advanced options, for details try: --help misc
-o message-content-type=<auto|text|html>
-o message-file=FILE         -o message-format=raw
-o message-header=HEADER     -o message-charset=CHARSET
-o reply-to=ADDRESS          -o timeout=SECONDS
-o username=USERNAME         -o password=PASSWORD
-o tls=<auto|yes|no>         -o fqdn=FQDN

Help:
--help                    the helpful overview you\'re reading now
--help addressing         explain addressing and related options
--help message            explain message body input and related options
--help networking         explain -s, -b, etc
--help output             explain logging and other output options
--help misc               explain -o options, TLS, SMTP auth, and more

 

4.实例：Linux下监控磁盘使用量并在超过阀值后自动发送报警邮件。

例：

#!/bin/bash
partition_list=(`df -h | awk \'NF>3&&NR>1{sub(/%/,"",$(NF-1));print $NF,$(NF-1)}\'`)

notification_email()
{
　　emailfrom=\'[e-mail]\'
　　sendto=\'[e-mail]\'
　　emailsmtp=\'smtp.163.com\'
　　title=\'Disk Space Alarm\'
　　emailuser=\'[e-mail]\'
　　emailpasswd=\'*****\'
　　/usr/sbin/sendmail -f $emailfrom -t $sendto -s $emailsmtp -u $title -xu $emailuser -xp $emailpasswd
}

critical=80
crit_info=""
for (( i=0;i<${#partition_list[@]};i+=2 ))
　　do
　　if [ "${partition_list[((i+1))]}" -lt "$critical" ];then
　　　　echo "OK! ${partition_list[i]} used ${partition_list[((i+1))]}%"
　　else if [ "${partition_list[((i+1))]}" -gt "$critical" ];then
　　　　crit_info=$crit_info"Warning!!! ${partition_list[i]} used ${partition_list[((i+1))]}%\\n"
　　　　　　　　　 echo -e $crit_info | notification_email
　　fi
　　done