bash 如果文件不为空，我如何编写一个 shell 脚本，该脚本将通过电子邮件发送给我？
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How can I write a shell-script that will email me a file if the file is not empty?
提问by Hintswen
I'm looking for a script I can run to check if a text file is empty, if it is then do nothing but if it has something in it, I want it to send me an email with the text file as the message. No idea how to do it.
我正在寻找一个脚本，我可以运行它来检查文本文件是否为空，如果是空的，则什么都不做，但如果其中有内容，我希望它向我发送一封包含文本文件作为消息的电子邮件。不知道该怎么做。
回答by Leigh Gordon
回答by zoul
For example:
例如：
test -s your_file && mutt -a your_file -s "Sending you a file" [email protected]
This will send the file as attachment. If you want to include the file in the message body, you can use the -iswitch instead of the -a. If you don't have Mutt installed you can call mail:
这会将文件作为附件发送。如果要在消息正文中包含文件，可以使用-i开关代替-a. 如果你没有安装 Mutt，你可以调用mail：
test -s your_file && mail -s "Sending you a file" [email protected] < your_file
回答by jabbie
As a script
作为脚本
#!/bin/bash
file=file_to_check
if [ -s ${file} ] ; then
mail -s "The file is not empty!" [email protected] < $file
fi
Or in one line. (To put in a crontab)
或者在一行中。（放入 crontab）
[ -s file_to_check ] && mail -s 'File is not empty' [email protected] < file_to_check
回答by Hyman Leow
Something like this should work.
像这样的事情应该有效。
if [ `wc -l file.txt` -gt 0 ]; then
mail root@localhost < file.txt
fi
