如何以正确的格式发送邮件

Question

我有一个简单的脚本，它可以进行系统更新并发送关于状态的邮件，如下所示：

echo '===============================n' > mylog.log
sudo apt-get update -y >> mylog.log
if [ $? -eq 0 ]; then
echo 'completed successfullyn' >> mylog.log
else
echo 'FAILEDn' >> mylog.log
fi
echo '===============================' >> mylog.log
sudo apt-get dist-upgrade -y >> mylog.log
if [ $? -eq 0 ]; then
echo 'completed successfullyn' >> mylog.log
else
echo 'FAILEDn' >> mylog.log
fi
echo 'sending mailn' >> mylog.log 
mailx -aFrom:[e-mail] -a 'Content-Type: text/html' -s "Updates @`date`" [e-mail] < mylog.log

程序运行良好，我正在收到邮件。但是邮件没有任何新的线路。以下是邮件内容：

=============================== Hit http://security.ubuntu.com precise-security/multiverse Translation-en Hit http://security.ubuntu.com precise-security/restricted Translation-en Hit http://security.ubuntu.com precise-security/universe Translation-en Reading package lists... completed successfully =============================== Reading package lists... Building dependency tree... Reading state information... 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. completed successfully sending mail

邮件以单行形式显示，这不是可读的格式。如果我打开日志文件mylog.log，它的格式是正确的，有新行。

=============================== 
Hit http://security.ubuntu.com precise-security/multiverse Translation-en 
Hit http://security.ubuntu.com precise-security/restricted Translation-en 
Hit http://security.ubuntu.com precise-security/universe Translation-en 
Reading package lists... 
completed successfully 
=============================== 
Reading package lists... 
Building dependency tree... 
Reading state information... 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 
completed successfully 
sending mail

如何以正确可读的格式发送邮件？

更新：在代码中使用了printf，但问题相同。

printf '%b' '===============================rn' > mylog.log
sudo apt-get update -y >> mylog.log
if [ $? -eq 0 ]; then
printf '%b' 'completed successfullyrn' >> mylog.log
else
printf '%b' 'FAILEDn' >> mylog.log
fi
printf '%b' '===============================' >> mylog.log
sudo apt-get dist-upgrade -y >> mylog.log
if [ $? -eq 0 ]; then
printf '%b' 'completed successfullyrn' >> mylog.log
else
printf '%b' 'FAILEDn' >> mylog.log
fi
printf '%b' 'sending mailn' >> mylog.log 
mailx -aFrom:[e-mail] -a 'Content-Type: text/html' -s "Updates @`date`" [e-mail] < mylog.log

Answer 1

您声明的内容是HTML，但显然您发送的是一个简单的文本文件。添加HTML格式以使其按预期显示，或者将其作为text/plain发送。(就我个人而言，我强烈建议后者。)

Answer 2

我建议使用：

printf '%b' 'textrn'

Answer 3

执行

echo -e '===============================n'

默认情况下，bash不会解释反斜杠。