An unused account is one which has no edits, no deleted edits, no log entries (任务T36581), and no current/old uploads.
You can use deleteArchivedRevisions.php to first remove deleted revisions (e.g. after a massive vandalism/spam attack) and run removeUnusedAccounts.php afterwards.
||Skip accounts touched in last N days. 如果未设置，默认为“0”。 In this case the script will check/remove all unused accounts up to the current date, including accounts created just a few seconds ago.
||List of comma-separated groups to exclude. Accounts from these groups will not be removed, also if they are unused.
||删除账户。 Running it without the parameter --delete, the script will only list the unused accounts.