AWS CLI Loading Output Onto Multiple Lines - amazon-web-services

Question

I am using the aws cli to give me some output which I require in .csv format.
The below shows the commands I've put together:
aws ec2 describe-instances --output text --query 'Reservations[*].Instances[*].[VpcId, SubnetId, InstanceId, InstanceType, ImageId, State.Name, LaunchTime, Placement.AvailabilityZone, Placement.Tenancy, PrivateIpAddress, PrivateDnsName, PublicDnsName,[Tags[?Key==`Name`].Value],[Tags[?Key==`PowerData`].Value] ]' --output text | sed -E 's/\s+/,/g'
For some reason, the final two pieces of info, "Name" and "PowerData" end up on separate lines. This screws up my formatting when I open it up in a spreadsheet.
Anyone have any ideas on what might be causing that or how I may resolve it please?

Answer 1

The reason is TAGs return array so you need to print the only value on 0 index to display the TAGs on a single line.
You can verify this
aws ec2 describe-instances --output json --query 'Reservations[*].Instances[*].Tags[]'
output
[
{
"Key": "Name",
"Value": "demo"
},
{
"Key": "PowerData",
"Value": "demo"
}
]
so you need pipe expression
Tags[?Key==`Name`].Value| [0]
With the addition of filters, we could pass the result of one expression to another, operating on the result of a projection (or any expression).
Expression:
foo.*.bar | [0]
jmespath-pipe-expressions
So try this
aws ec2 describe-instances --output text --query 'Reservations[*].Instances[*].[VpcId, SubnetId, InstanceId, InstanceType, ImageId, State.Name, LaunchTime, Placement.AvailabilityZone, Placement.Tenancy, PrivateIpAddress, PrivateDnsName, PublicDnsName,Tags[?Key==`Name`].Value| [0],Tags[?Key==`PowerData`].Value | [0] ]' --output text | sed -E 's/\s+/,/g'