rpm -qa|grep mariadb

通过使用命令"rpm -qa | grep mariadb"，您查找系统中安装的所有与mariadb相关的软件包。该命令会列出所有包含"mariadb"关键字的软件包。您提供的引用中的命令输出如下：

mariadb-server-5.5.52-1.el7.x86_64
mariadb-libs-5.5.52-1.el7.x86_64

这表明您的系统中安装了两个mariadb相关的软件包：mariadb-server和mariadb-libs。

请注意，在执行"rpm -qa | grep mariadb"之前，确保您已经以root权限登录到系统中，并且已经安装了rpm工具。如果您想卸载这些mariadb软件包，可以使用"rpm -e"命令加上软件包名称来进行卸载。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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