[用户与用户组的关系](%E7%94%A8%E6%88%B7%E4%B8%8E%E7%94%A8%E6%88%B7%E7%BB%84%E7%9A%84%E5%85%B3%E7%B3%BB.md) [用户相关的系统配置文件](%E7%94%A8%E6%88%B7%E7%9B%B8%E5%85%B3%E7%9A%84%E7%B3%BB%E7%BB%9F%E9%85%8D%E7%BD%AE%E6%96%87%E4%BB%B6.md) [用户相关命令](%E7%94%A8%E6%88%B7%E7%9B%B8%E5%85%B3%E5%91%BD%E4%BB%A4.md) [用户组相关命令](%E7%94%A8%E6%88%B7%E7%BB%84%E7%9B%B8%E5%85%B3%E5%91%BD%E4%BB%A4.md)