" 目录：RHCA+ -> 6 软件仓库 -> 33 _etc_yum.conf "
yum默认配置文件
root@wuzuniao \~# ll /etc/yum.conf #查看配置文件权限
-rw-r--r--. 1 root root 813 Apr 15 2014 /etc/yum.conf
root@wuzuniao \~# cat /etc/yum.conf #查看配置文件默认内容
main #主区域
cachedir=/var/cache/yum/basearch/releasever #缓存路径
keepcache=0 #安装软件包后，是否保留下载的软件包，0为不保留
debuglevel=2 #调试级别
logfile=/var/log/yum.log #安装软件过程日志
exactarch=1 #从仓库中获取的版本和要求的版本必须严格匹配
obsoletes=1 #
gpgcheck=1 #是否检查软件包来源
plugins=1 #是否启用插件
installonly_limit=3 #更新软件包后，保留的旧版本数量
This is the default, if you make this bigger yum won't see if the metadata
is newer on the remote and so you'll "gain" the bandwidth of not having to
download the new metadata and "pay" for it by yum not having correct
information.
It is esp. important, to have correct metadata, for distributions like
Fedora which don't keep old packages around. If you don't like this checking
interupting your command line usage, it's much better to have something
manually check the metadata once an hour (yum-updatesd will do this).
metadata_expire=90m
PUT YOUR REPOS HERE OR IN separate files named file.repo
in /etc/yum.repos.d #仓库配置文件目录
root@wuzuniao \~#