Azure CLI - Delete files in storage account with pattern

I have the following files and directories in my container.

I need to delete all files and directories except the mf folder and its content.
I use this command:

az storage blob delete-batch --source 'CONTAINER' --account-name STORAGE_ACCOUNT --pattern '[!mf]*'

The problem that this command not only avoids deleting the mf directory but also the files that start with the letter m and f

Is there a way to modify the pattern to include files starting with m and f?

> I need to delete all files and directories except the mf folder and its content.

You can use the Powershell as an alternative way to achieve delete all files and directories except the mf folder and its content.

Command:

$ctx = New-AzStorageContext -StorageAccountName 'venkat123' -StorageAccountKey 'your-storage-account-key'
$containerName = "test"
$prefix = ""
$blobs = Get-AzStorageBlob -Container $containerName -Context $ctx -Prefix $prefix
foreach ($blob in $blobs) {
    if ($blob.Name -notlike "mf/*") {
        Remove-AzStorageBlob -Blob $blob.Name -Container $containerName -Context $ctx
    }
}

Initially, I had a structure of files.

When I use the above command it deletes all files and folders except the mf folder.

Output:

Portal:

To continue using az cli commands, I used the following command

blob=$(az storage blob list -c '$web' --account-name "$SA_NAME" --query "[].{name:name}" --output tsv)
prefix="mf"

for b in $blob
do
  if [[ "$b" != "$prefix"* ]];
  then
    az storage blob delete -c '$web' --account-name "$SA_NAME" -n "$b"
  fi
done

We can use this command for deleting files inside the container.

az storage blob delete-batch --account-key <storage_account_key> --account-name <storage_account_name> --source <container_name> --delete-snapshots include