Shell Programming and Scripting

Hi, I'm writing a shell script that calls a few commands that prompt the user for two simple yes/no questions. if the answers are consistent (the first is a yes, the second is a no), what would my expect script look like? Google is only giving me answers for scripts where I telnet or ssh. right now I have:

Code:

#!user/bin/expect

package require Expect
spawn bash

expect "...."
send "yes\r"
expect "...."
send "yes\r"

exit 0

also, do I save the file as .tcl?

Thank you!

You certainly don't need expect to feed answers into a shell script!

Code:

printf "yes\nno\n" | ./myscript

Thanks Corona! It isn't working, though- I need it to enter a yes/no only at certain, specific prompts. The script runs a series of programs that spit out thousands of lines onto the terminal- the yes/nos need to be sent at specific prompts. Sorry if I wasn't clear on this before. Can I still use printf to do this?

So you have a script that spits out a prompt for user to enter yes or no. You want to automate this via expect, so that the responses can be passed onto this script? right?

if so, consider this example, it will give you an hint. Here is an example of using expect with fsck, something similar to what you are trying:

Disclaimer: This code is not mine, just found it on the interweb.

Code:

spawn fsck
for {} 1 {} {
expect eof break \
{*UNREF\ FILE*CLEAR?\ } {send y\r} \
{*BAD\ INODE*FIX?\ } {send y\r} \
{*?\ } {send n\r}
}

here is another good URL:

6 Expect Script Examples to Expect the Unexpected (With Hello World) (link removed)

Look at section 3 , Automate User Processes With Expect