title: Simulate user input in bash script
body: <p>I am creating my own bash script, but I am stuck at the moment. Basically, the script would be used to automate server setup in CentOS. Some software normally asks the user to type a password. I want the script to put the password that I have generated and stored as a variable instead of asking the user.</p>
  
  <p>When the message "New password:" appears during install, how can I make the script put the value stored in a variable <code>$key</code> as if the user had typed it, with a bash script?</p>