#!/bin/bash
# This script changes the access tier to "Archive" for all blobs in a folder on a Microsoft Azure storage account
#

blobs=($(az storage blob list --num-results "*" --account-name <account_name> -c <container_name> | grep -E '"name": "path/to/folder' | sed -n -e 's/\"name\": \"//p' | sed -n -e 's/\",//p'))

length=${#blobs[@]}

for ((i = 0; i != length; i++)); do
   echo "Changing access tier to Archive for: ${blobs[i]}"
   az storage blob set-tier --account-name <account_name> -c <container_name> -n ${blobs[i]} --tier Archive
done