将两个标准输入传递给 bash 脚本

Question

I'm executing uninstall.sh in within bash script which access two std inputs, "yes" and it executes some steps, and then another "y" for to execute another steps as confirmation.

Tried using here doc option as below:

./uninstall.sh <<"EOF"
yes
y
EOF

or

./uninstall.sh <<EOF1 <<EOF2
yes
EOF1
y
EOF2

but it only accepts yes and first stdin and for seconds, it does not take "y" as input, giving below error:

java.util.NoSuchElementException: No line found

What I'm missing here?

Answer 1

You have mentioned that you are using java. If you are using scanner.nextLine() to read both the inputs try following command

printf "yes\ny" | ./uninstall.sh

If you are using scanner.next() to read both the inputs try

printf "yes y" | ./uninstall.sh

Make sure you are not closing the input stream using scanner.close() after reading the first input. Check if you are having same issue as https://stackoverflow.com/a/13042296/10879454