我在 Bluehost 上托管了一个 VM。我无法使用 yum 安装 Xvfb。我使用 yum 进行的任何尝试（$ yum、$ yum install Xvfb等）都出现以下错误；
CRITICAL:yum.cli:Config Error: Error accessing file for config file:///etc/yum.conf
使用PuTTY 登录到我的网站，如果我输入，rpm -qi yum我会得到
[email protected] [~]# rpm -qi yum
Name : yum Relocations: (not relocatable)
Version : 3.2.29 Vendor: CentOS
Release : 43.el6.centos Build Date: Tue Dec 17 05:27:10 2013
Install Date: Wed Jan 8 02:21:22 2014 Build Host: c6b9.bsys.dev.centos.org
Group : System Environment/Base Source RPM: yum-3.2.29-43.el6.centos.src.rpm
Size : 4736145 License: GPLv2+
Signature : RSA/SHA1, Tue Dec 17 06:24:32 2013, Key ID --8bytesOfHex--
Packager : CentOS BuildSystem <http://bugs.centos.org>
URL : http://yum.baseurl.org/
Summary : RPM package installer/updater/manager
Description :
Yum is a utility that can check for and automatically download and
install updated RPM packages. Dependencies are obtained and downloaded
automatically, prompting the user for permission as necessary.
我甚至不知道这个包裹在哪里，所以我可以给出yum.conf