Linux 将三个 echo 语句的输出通过管道传送到邮件
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/11875689/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Pipe the output from three echo statement to mail
提问by AKIWEB
echo "Total items: `echo $QUERY1 | awk '{print }'`"
echo "Total Error: `echo $QUERY1 | awk '{print }'`"
echo "Percentage: $QUERY2"
How can I send these three things in a single email using mail command. So the mail body should be like this below whenever I get any email, in each line there should be one echo statement-
如何使用mail command. 因此，每当我收到任何电子邮件时，邮件正文都应该如下所示，每一行都应该有一个 echo 语句-
Total items:- Some Number
Total Error:- Some Number
Percentage:- Some Number
I am running SunOS
我在跑步 SunOS
bash-3.00$ uname -a
SunOS lvsaishdc3in0001 5.10 Generic_142901-02 i86pc i386 i86pc
采纳答案by shellter
Your requirement is not completely clear, but try this
你的要求不完全清楚，但试试这个
{
echo "Total items: `echo $QUERY1 | awk '{print }'`"
echo "Total Error: `echo $QUERY1 | awk '{print }'`"
echo "Percentage: $QUERY2"
} | mail -s "subject" [email protected],[email protected]
The { .. }pair creates a process group, and all std-output is redirected into the 1 |(pipe), which connects to the std-in of your mail program.
这{ .. }对创建了一个进程组，所有标准输出都被重定向到 1 |（管道），它连接到邮件程序的标准输入。
You may need to use mailx, -sspecifies subject, which I see from your other question on this topic that you seem to understand.
您可能需要使用mailx,-s指定主题，我从您似乎理解的关于此主题的其他问题中看到了这一点。
Also sendmailwill need to be running and properly configured for any mail to be delivered from the machine that you execute this script.
还sendmail需要运行并正确配置从您执行此脚本的机器发送的任何邮件。
IHTH
IHTH
Edit: 2015-11-07
编辑：2015-11-07
Just got a 'nice answer' star for this, and on on review, I'm surprised that I didn't comment on excessive use of processes. For this case, this can be reduced to one call to awk, i.e.
刚刚为此获得了一个“不错的答案”星，并且在中，我很惊讶我没有评论过度使用流程。对于这种情况，这可以减少到一次调用awk，即
awk -v q1="$QUERY1" -v q2="$QUERY2" \
'END {
split(q1,q1arr)
print "Total items: " q1arr[1] \
"Total Error: " q1arr[2] \
"Percentage: " q2
}' /dev/null \
| mail -s "subject" [email protected],[email protected]
Or for the one-liner crowd ;-), that is
或者对于单线人群;-)，那就是
awk -v q1="$QUERY1" -v q2="$QUERY2" 'END {split(q1,q1arr);print "Total items: " q1arr[1] "\nTotal Error: " q1arr[2] "\nPercentage: " q2 }' /dev/null | mail -s "subject" [email protected],[email protected]
The { .. }aren't needed in this case, as there is only one process connecting to the pipe.
在{ .. }不需要在这种情况下，只有一个连接到所述管的过程。
For a case like a summary report being sent once a day, the original code is completely usable (but non-optimal). However, coding non-optimally leads to bad habits. Calling 5 processes when one will suffice in a loop that runs 1000s of times in a day, will consume compute resources unnecessarily.
对于每天发送一次汇总报告之类的情况，原始代码完全可用（但不是最佳的）。然而，非最佳编码会导致坏习惯。在一天运行 1000 次的循环中调用 5 个进程就足够了，这将不必要地消耗计算资源。
Finally, as the o.p. didn't include any sample data, the code is only lightly tested.
最后，由于 op 不包含任何示例数据，因此代码仅经过轻微测试。
回答by Brian Carpio
Just create a function in bash and | (pipe) it to sendmail.
只需在 bash 和 | 中创建一个函数 （管道）它发送邮件。
#!/bin/bash
echo_statement(){
echo "Total items: `echo $QUERY1 | awk '{print }'`"
echo "Total Error: `echo $QUERY1 | awk '{print }'`"
echo "Percentage: $QUERY2"
}
echo_statement | mail -s "subject" [email protected]
