s3 object not looping as expecting - bash

Question

Bash script was working before
Below script broke after a clean install
AWS Command Line Interface is installed and AWS is configured
When is it not looping through each file?
## variables are set before this point
files=$(/usr/local/bin/aws s3api list-objects --bucket "$bucket" --prefix "$target_zipname" --query "Contents[].{Key: Key}")
##return sample##
# [ { "Key": "fmpbks_2016_08_18_17_08_35.zip" }, { "Key": "fmpbks_2016_08_18_17_14_39.zip" }, { "Key": "fmpbks_2016_08_19_10_54_24.zip" }, { "Key": "fmpbks_2016_08_19_10_55_57.zip" }, { "Key": "fmpbks_2016_08_19_10_56_29.zip" }, { "Key": "fmpbks_2016_08_19_11_00_56.zip" } ]
##
for zip_file in $files
do
echo $zip_file # for testing
delete_path="s3://$bucket/$zip_file"
deleted=$(/usr/local/bin/aws s3 rm $delete_path)
break
done
output:
[
{
"Key":
"fmpbks_2016_08_18_17_08_35.zip"
},
{
"Key":
"fmpbks_2016_08_18_17_14_39.zip"
},
{
"Key":
"fmpbks_2016_08_19_10_54_24.zip"
},
{
"Key":
"fmpbks_2016_08_19_10_55_57.zip"
},
{
"Key":
"fmpbks_2016_08_19_10_56_29.zip"
},
{
"Key":
"fmpbks_2016_08_19_11_00_56.zip"
}
]

Answer 1

The aws s3api list-buckets command returns a JSON object by default. The for loop doesn't understand how to interpret JSON.
Use the --output text option to list each file on a separate line:
files=$(aws s3api list-objects --bucket MY-BUCKET --query 'Contents[*].Key' --output text)
By the way, if your goal is to delete all files within a certain path, you could use:
aws s3 rm s3://MY-BUCKET --exclude "*" --include "MY-PREFIX*" --recursive