list all EC2 instances in all regions

gistfile1.txt

#!/usr/bin/env bash
for reg in `aws ec2 describe-regions --query 'Regions[].[RegionName]' --output=text`; do
  aws ec2 describe-instances --region ${reg} \
    --query 'Reservations[].Instances[].[Tags[?Key==`Name`] | [0].Value, InstanceId, Placement.AvailabilityZone, PrivateIpAddress, PublicIpAddress]' --output=text
done

# the output is Google Docs spreadsheet friendly.
# To make it human friendly, change it to --output=table