Authorize keys from IAM in SSH

authorize_keys.sh

#!/bin/bash -e
if [ -z "$1" ]; then
    exit 1
fi

UserName="$1"

# replace the sanitized characters with omitted while importing before fetching data from IAM

/opt/awscli/bin/aws iam list-ssh-public-keys --user-name $UserName --query "SSHPublicKeys[?Status == 'Active'].[SSHPublicKeyId]" --output text | \
    while read KeyId; do
        /opt/awscli/bin/aws iam get-ssh-public-key --user-name $UserName --ssh-public-key-id "$KeyId" --encoding SSH --query "SSHPublicKey.SSHPublicKeyBody" --output text
    done