Grab value out of AMI Description from AWS EC2 describe AMI call via AWS CLI

getMatchFromDescription.sh

#!/bin/bash

# For a list of EC2 AMI IDs in a file, find something in each of the AMI description attributes and capture the characters after it. 
# Then output it in JSON.
# Replace 'SAMBA' with the string you want to search for.

# ami file of ids example:
#
# ami-a231212
# ami-sf12518agsj2l31
# ami-03230eaaaa85ed
#

filename='ami_ids_with_descriptions.txt'
region='us-west-2'

# || [ -n "$ami_id" ] is used so that we don't skip the last line of data if a new line is missing at the end of the file.
while read -r ami_id || [ -n "$ami_id" ]; do 
    #echo $ami_id
    samba_ver=$(aws ec2 describe-image-attribute --image-id $ami_id --attribute description --region $region | awk '/SAMBA/ { match($0, /SAMBA/); print substr($0, RSTART - 0, RLENGTH + 20); }')
    echo "{'ami_id': \"$ami_id\", \"samba_ver\": \"$samba_ver\"},"
    sleep 2
done < $filename

# Output Example
# -------
#
#    {'ami_id': "ami-54...2c", "samba_ver": "SAMBA:4.5.2-2"},
#
# -------