Quote:
Originally Posted by geekmaster
I did " waitforkey >/tmp/key &" which continues immediately, leaving waitforkey running in the background until a key is pressed, when it outputs the keypress value and quits. While waiting for a key, you can periodically check for a keypress in the main script with " key=$(cat /tmp/key)". You just need to get creative and try stuff...  |
Important Disclaimer for the following:
What the copy of busybox does that you might be using may vary from the following, you just have to try it to find out.
Every time you start a background job, that command __should__ return a "job id" number.
Then you can do other things, and when ready to proceed with the result of the background job, do a "wait <job id>".
Which will wait for the background job without the cpu overhead of a busy loop wait for the contents of /tmp/key to change. Where changes to /tmp/key is the expected result of the background job in this example case.