expect usage in bash script or bash command in expect script

Question

I have a script below that works except for the expect portion:

#!/bin/bash
#
invdir=/home/john/inventory

for file in $invdir/$1
do
  if [ -z $1 ] || [ -z $2 ]
  then
     echo "You must enter a value: prod, dev, dr, or test AND the password of the env you entered"
     exit 0
  else
      for host in `cat $file`
      do
    ssh-copy-id -i ~/.ssh/id_rsa.pub $host <<-EOF
    expect "password:"
    send "$2\n" 
    EOF
      done
  fi
done

I found an expect script that does most of what I need:

#!/usr/bin/expect -f
spawn ssh-copy-id $argv
expect "password:"
send "your_password\n"
expect eof

to execute ./expect_script user@host1

My problem is that I don't know enough of either bash or expect to get these two to work under one bash script or expect script.

Thank you in advance....

Answer 1

#!/bin/bash
#
invdir=/home/john/inventory

for file in "$invdir"/"$1"
do
  if [[ -z "$1" ]] || [[ -z "$2" ]]
  then
    echo "You must enter a value: prod, dev, dr, or test AND the password of the env you entered"
    exit 0
  else
    while IFS= read -r host
    do
      export host
      export pw="$2"
      expect <<'EOF'

        spawn ssh-copy-id -i $env(HOME)/.ssh/id_rsa.pub $env(host)
        expect "password:"
        send "$env(pw)\n" 
        expect eof

EOF
    done < "$file"
  fi
done

Some notes:

• take care to quote your shell variables, especially positional params
• you need to launch the expect interpreter to run expect code
• pass shell variables to expect via the environment
• don't read the lines of a file with for
• I don't use <<-EOF because it's too easy to use non-tabs for the EOF word.
• but do use <<'EOF' to protect the expect variables