How to insert values command will ask for before executing it

I'm trying to convert a P12 file to a PEM file. When I execute the command, the terminal asks me for three things:

P12 passphrase (I type it in, hit enter)
PEM passphrase (type it in, hit enter)
PEM passphrase confirm (type it in, hit enter)

I know I can execute a sudo command all in one shot by using the following:

Code:

echo sudopassword | sudo rm -rf /file.txt;

How can I add all three values in one shot? Thanks

 

I tried that and it didn't work. I'll have to look into "expect."

 

Really? Could you put give me the same thing you gave me above, but set the passwords to "test"?

Should it be: echo -e "$test\n$test\n$test" | openssl ...