gistfile1.txt

## Here's the block_mappings snippet where I'm setting that up and the part of the script where I create the build command
===========================================================================================================================

block_mappings='[{\"DeviceName\":\"/dev/xvdf\",\"Ebs\":{\"VolumeSize\":100,\"VolumeType\":\"gp2\",\"DeleteOnTermination\":false}},{\"DeviceName\":\"/dev/xvdg\",\"Ebs\":{\"VolumeSize\":1000,\"VolumeType\":\"gp2\",\"DeleteOnTermination\":false}}]'


  # Create the build command
  build_command="aws ec2 run-instances --image-id $image_id --key-name $key_name --security-group-ids $security_group_ids --instance-type $instance_type --subnet-id ${subnet_ids[$i]} --iam-instance-profile Name=${env_prefix}-wallet-server --user-data file://${env_prefix}_wallet.sh"

  if [[ "$environment" != development ]]; then
    build_command="$build_command --block-device-mappings \"$block_mappings\""
  fi

  # Run the build command
  echo "Running build command:"
  echo "$build_command"

  $build_command
  
  
##  OUTPUT when run
===================
  
  Running build command:
aws ec2 run-instances --image-id ami-76817c1e --instance-type m3.large --block-device-mappings "[{\"DeviceName\":\"/dev/xvdf\",\"Ebs\":{\"VolumeSize\":100,\"VolumeType\":\"gp2\",\"DeleteOnTermination\":false}}]"

Error parsing parameter '--block-device-mappings': Invalid JSON:

### If I copy/paste that output'd command it runs fine.