script waiting for user to hit enter

[secondmouse]

Hello all,
I'm writing a script that prompts user to insert a blank cd to the cd drive and ask user to hit enter when done, otherwise the the script will beep every second, what I came up with so far is

#!/bin/bash
while true; do
  echo "Insert a blank cd, hit enter to continue"
  echo -en '\a' > /dev/console
  read -n 1 keypress
  if [ "$keypress" == "" ]; then
    break
  fi
  sleep 1
done
#to run rest of the code

The problem with this script is that it beeps only once, then waits for user's input. I think the line in bold is causing the problem because it won't exit until something is entered. Is there a way to fix this? Any suggestions are welcome. I'm running OpenSuSE 10.3.

[burschik]

1) type "help read"
2) understand what you are reading
3) notice the option "-t" for "timeout"
4) success!

[secondmouse]

Hey burschik,
I should have read the manual for read command more carefully. Thanks for the direction. I've solved the problem with the following code:

#!/bin/bash
[ ! `whoami` == "root" ] && echo "must be root to run this script" && exit 1
keypress="a"
echo "Insert a blank cd, hit enter to continue"
until [[ $keypress == '' ]]; do
  echo -en '\a' > /dev/console
  read -t 1 -n 1 keypress
done

[burschik]

You're welcome.