MAILX is a tool used on UNIX systems to process messages, and it can be used to send and read messages. Let's see how you can use it to send messages.
Send format
Mailx-s Subject User@xxx.com < Message_file
If the message content is stored in a msg file, you can use the following method:
Mailx-s "Test Mail" zdd@163.com < msg
Or
Cat msg | Mailx-s "Test Mail" zdd@163.com
Separated by commas between multiple recipients
Cat msg | Mailx-s "Test Mail" zdd@163.com,zdd2@163.com,zdd2@163.com
You can also enter message content directly from the command line:
Mailx-s "Test Mail" zdd@163.com
The above command will enter the command line input state, you can enter the content, press the Ctrl+d key to end the input.
Other options
-r Specifies the sender
-C Designated CC person
-B designated Secret sender
Separated by commas between multiple recipients
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Transferred from http://www.cnblogs.com/softwaretesting/archive/2011/11/23/2260520.html