bash 暂停 shell 脚本，直到用户按下 Enter
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Pause shell script until user presses enter
提问by Dheeraj
When I am reading a file
当我阅读文件时
sample script
示例脚本
while read file
do
temp = $(echo $file)
read -p "Press Enter to continue"
echo $temp
done < test.txt
I want to pause the script until I press ENTER
我想暂停脚本，直到我按 ENTER
回答by Barmar
readreads from standard input by default, which is redirected to the file, so it's getting the line from the file. You can redirect back to the terminal:
read默认情况下从标准输入读取，它被重定向到文件，所以它从文件中获取行。您可以重定向回终端：
read -p "Press Enter to continue" </dev/tty
Another option would be to use a different FD for the file redirection
另一种选择是使用不同的 FD 进行文件重定向
while read -u 3
do
...
done 3< test.txt
