# 系统运维函数

```{toctree}
:maxdepth: 1
:titlesonly:

CURRENT_ROLE_NAME() <current_role_name>
CURRENT_ROLE() <current_role>
CURRENT_USER_NAME() <current_user_name>
CURRENT_USER() <current_user>
VERSION() <version>
PURGE_LOG() <purge_log>
```