Linux-Bash-获取$ releasever和$ basearch值? [英] Linux - Bash - Get $releasever and $basearch values?
问题描述
我正在编写一个bash脚本，使用reposync从远程存储库中提取软件包，因此我可以将节点指向本地.因此，我正在尝试使本地存储库配置与usptream存储库配置尽可能相似，如下所示:
I'm writing a bash script to pull packages from remote repos, using reposync, so I can point my nodes to pull locally. As such I am trying to keep the local repo configs as similar as possible to the usptream repo configs, like this:
# upstream
baseurl=http://mirror.freedomvoice.com/centos/$releasever/os/$basearch/
# local
baseurl=http://user:password@repo.example.com/centos/stable/$releasever/os/$basearch/
在bash脚本中，是否有更干净的方法来获取$ releasever和$ basearch值?我正在考虑执行以下操作:
Within the bash script, is there a cleaner way to get $releasever and $basearch values? I was thinking of doing the following:
yum_metadata=$(yum version nogroups)
哪个返回:
Loaded plugins: versionlock Installed: 6/x86_64 360:6167019baac7e76f94c26320424dc41a7f046a70 version
然后对6/x86_64值进行正则表达式.有点凌乱，正在寻找一种更优雅的方法.
Then regexing for the 6/x86_64 values. Kind of messy, and looking for a more elegant approach.
推荐答案
大多数发行版都使用distroverpkg版本来获取releasever和basearch.
Most distro uses the distroverpkg version to get the releasever and basearch.
如果查看/etc/yum.conf，您将看到该发行版设置为redhat-release(对于RHEL)，enterpriselinux-release(对于OEL)以及其他.
If you look at /etc/yum.conf, you will see that distrover is set to redhat-release (for RHEL), enterpriselinux-release (for OEL), and others.
要获取程序包名称:
distro=$(sed -n 's/^distroverpkg=//p' /etc/yum.conf)
要获取发布版本:
releasever=$(rpm -q --qf "%{version}" -f /etc/$distro)
要获取基拱:
basearch=$(rpm -q --qf "%{arch}" -f /etc/$distro)
上面的新代码将尝试获取与文件/etc/$distro关联的软件包.某些Linux将/etc/redhat-release添加到其软件包发行版中.
The new code above will try to get the package associated with a file /etc/$distro. Some Linux adds /etc/redhat-release to their package release.
如果得到file not owned by any package，请使用发行版随附的/etc/*-release文件.可能是/etc/centos-release.
If you get file not owned by any package then use the /etc/*-release file that came with your distro. It is probably /etc/centos-release.
您可以通过检查哪个文件与centos一起打包来检查适合此代码的/etc/*-release.
You can check the appropriate /etc/*-release appropriate for this code by checking which file is packaged with centos.
rpm -qf /etc/*-release
然后使用此文件代替上面的第一行.
Then use this file instead of the first line above.
distro=/etc/centos-release
这是OEL的一个示例，其中/etc/redhat-release被打包为enterprise-release.
Here's an example from OEL where /etc/redhat-release is packaged as enterprise-release.
rpm -q --qf "%{name}" -f /etc/redhat-release
输出:
enterprise-release
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