爲什麼在unix中執行郵件命令後提示輸入

Question

#!/bin/bash 
### script to send email with attachment ### 
### Declare Email Subject 

SUBJECT="TESTING EMAIL" 

## Declare Reciever's Email Id 

EMAIL="reciever@testemail.com" 

## Declare CopyTo Email Id 

COPYTO_EMAIL=copyto@testemail.com 
destfile="/home/acer/text.txt" 

## Removing output files of the script from previous run 

rm -f out.mail 

## Remove the message body and sent files used in previous versions 

rm -f mailbody.txt 
rm -f OUTPUTRESULT.CSV 

## Create the mail body message in a text file 
## Initialize the text file 

cat > mailbody.txt 
echo "Hi User,\n" >> mailbody.txt 
echo "The result file for the server - SERVERNAME - is attached with this email.\n" >> mailbody.txt 
echo "\n\nRegards,\nAdmin" >>mailbody.txt 

## Sending email using mail command 

cat mailbody.txt > out.mail 

# Copy the OUTPUT.CSV file generated to another file OUTPUT_RESULT.CSV 

uuencode $destfile >> out.mail 

# are in their respenter code hereective variables - $SUBJECT and $EMAIL. 

mail -s "$SUBJECT" "$EMAIL" "$COPYTO_MAIL" < out.mail 
echo "Email sent." 

在這個腳本中執行郵件命令後，終端提示用戶輸入。 當我按ctrl + d只顯示郵件發送的味精。

它不應該要求用戶輸入。

我該怎麼辦？

你能告訴我爲什麼它會提示用戶輸入嗎？

Answer 1

是什麼讓你覺得它是在郵件命令之後終端提示用戶輸入的？你真的追蹤過它嗎？ （bash -x）

在我看來，有什麼阻止你的是這一行：

cat > mailbody.txt 

它的阻止，因爲在這種情況下，cat從標準輸入讀取寫入mailbody.txt，因爲你沒有約束標準輸入任何更具體的東西，它仍然從終端讀取。

Answer 2

聯機幫助頁郵件（1）狀態我的系統上執行以下操作：

發送郵件

To send a message to one or more people, mail can be invoked with argu- 
ments which are the names of people to whom the mail will be sent. You 
are then expected to type in your message, followed by a control-D ('^D') 
at the beginning of a line. The section below, Replying to or 
originating mail, describes some features of mail available to help you 
compose your letter. 

不管怎樣，你必須或許進入控制d 。

我也有麻煩發送電子郵件與mail或mutt從命令行沒有用戶交互。我的解決方法是使用命令行中的php mail函數。

像這樣的東西（未測試，只是從我的腦海中寫道）：

php -r "mail('user@example.com', 'my subject', 'my body message');"