CentOS在使用yum时遇到File contains no section headers


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     yum是一个shell前端软件包管理器,基于RPM包管理,能够从指定的服务器上下载RPM包
在使用yum时若遇到File contains no section headers错误，怎么解决

  • ***问题原因:***可能是/etc/yum.repos.d/CentOS-Base.repo的yum源出现问题所致

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     使用指令vim /etc/yum.repos.d/CentOS-Base.repo修改/etc/yum.repos.d/CentOS-Base.repo内容
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# CentOS-Base.repo
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client.  You should use this for CentOS updates
# unless you are manually picking other mirrors.
#
# If the mirrorlist= does not work for you, as a fall back you can try the
# remarked out baseurl= line instead.
#
#

[base]
name=CentOS-$releasever - Base
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os&infra=$infra
#baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6

#released updates
[updates]
name=CentOS-$releasever - Updates
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates&infra=$infra
#baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6

#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras&infra=$infra
#baseurl=http://mirror.centos.org/centos/$releasever/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus&infra=$infra
#baseurl=http://mirror.centos.org/centos/$releasever/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6

#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib&infra=$infra
#baseurl=http://mirror.centos.org/centos/$releasever/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6

注：该CentOS版本为CentOS-6
按ESC键 跳到命令模式，然后：

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:w   保存文件但不退出vi

:w file 将修改另外保存到file中，不退出vi

:w!   强制保存，不推出vi

:wq  保存文件并退出vi

:wq! 强制保存文件，并退出vi

q:  不保存文件，退出vi

:q! 不保存文件，强制退出vi

:e! 放弃所有修改，从上次保存文件开始再编辑

修改完成后，使用yum指令查看是否正常访问。

或者使用命令rm -f /etc/yum.repos.d/CentOS-Base.repo删除原有文件
然后重新下载阿里的yum
命令：wget -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
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查看下载CentOS-Base.repo文件是否产生异常，若文件内容保存在Centos-6.repo中，直接将文件重明明为CentOS-Base.repo
在这里插入图片描述

  • 清理yum数据：yum clean all

  • 更新缓存：yum makecache

    附：下载安装firefox
    在这里插入图片描述
    在这里插入图片描述