aws ec2 describe-instances --filters "Name=tag:Name,Values=name-tag-of-your-instance" |\
jq -r '.Reservations[].Instances[].NetworkInterfaces[].PrivateIpAddress'
aws ec2 describe-instances --filters "Name=instance-type,Values=r5.2xlarge" |\
jq -r '.Reservations[].Instances[].InstanceId' | wc -l