Bash script help -- Script2 calls Script1 and supplies input to script1.

ckacosta · 11-02-2010, 02:40 PM

I have an app startup script that requires user input.

# start-app.sh
Enter PIN <user manually enters PIN here>
<app startup continues>

I want to write a second script that will call the first script, supply the input (PIN) automatically, then allow the first script to continue and start the app.

The problem is, I need script2 to give the PIN to script1 while script1 is running.

Is this possible?

Thanks

MensaWater · 11-02-2010, 03:21 PM

Yes. It could be done with "expect".
http://en.wikipedia.org/wiki/Expect

However, if script1 is really a script it might be simpler and better to modify it to accept the PIN as input at command line. It can be setup in such a way as to accept that at command line if given or if not to prompt the user as it does currently.