Ubuntu

Question

我正在尝试在Ubuntu上安装Rails，但它显示以下错误：

ERROR: While executing gem ... (Gem::FilePermissionError) You don't have write permissions into the /var/lib/gems/1.9.1 directory.

请帮我安装Rails gem。

Answer 1

    while ($row = $result->fetch_assoc()) {
        echo "Name: " . $row["CID"];
        echo " <br>";
        $avg = $row["AVG(CQ1)"];
        $name = $row["CID"];
        $sql = "UPDATE CES2_RESULTS_UA SET CQ1 = $avg WHERE CID = '$name'";