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I have a program that runs from the command line. As soon as it runs, it asks for a text value and expects the return key to be pressed after that.

Is that possible to create a bash script that runs that program, wait a little bit for the prompt to appear (lets say 2 seconds) and then provide the text and the enter key?

EDIT:

I have created this script with expect but it is not working:

#!/usr/bin/expect -f

set timeout 15
set user "myusername"
set server "x.x.x.x"

spawn ssh -l $user -p AAAA $server
expect "[email protected]'s password: "
send "the password\r"

where AAAA is the port and x.x.x.x the IP.

when I run this script it finishes almost immediately and nothing happens.

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  • 2
    Have you looked at expect? This is the sort of task it was made for Commented Jun 11, 2015 at 14:58
  • I have edited my question to show the script I have created using expect. First time I hear about expect. I was "expecting" the script to work, but it is not. Commented Jun 11, 2015 at 15:24
  • Try ending the send command with \r to "press enter" Commented Jun 11, 2015 at 15:27
  • sorry about that, I forgot to type \r on the question. The script has \r and is not working. Commented Jun 11, 2015 at 15:44
  • 1
    Is there any compelling reason why you can't use certificate-base authentication and dispense with the need for a password and its attendant complexity entirely? Commented Jun 11, 2015 at 15:47

1 Answer 1

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It is working now, but I changed the script to:

#!/usr/bin/expect -f

set timeout 15
set user "myusername"
set server "x.x.x.x"

spawn ssh -l $user -p AAAA $server
expect "[email protected]'s password: " { send "the password\r" }
interact
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