RPM规格文件查找安装版本

Question

安装rpm时，我需要找到软件包的先前版本（如果已安装）。我的spec文件如下

在POST

%post if [ "$1" = "1" ]; then # Perform new install fi elif [ "$1" = "2" ]; then # Perform update # what I need is value for Version if [ $Version = 1.0]; then # do upgrade 1 fi elif [ "$Version" = "2" ]; then #do upgrade 2 fi

fi

在上面的代码，我怎么能得到的版本价值。我试图使用执行rpm-qi | grep <rpm_package>有没有其他方法可用？

Answer 1

不检查版本。检查数据是旧的还是新的。

参见： https://fedoraproject.org/wiki/Packaging:ScriptletSnippets#Saving_state_between_scriptlets

%pre 
grep OLDDATA /etc/myconfig >/dev/null && touch %{_localstatedir}/lib/rpm-state/%{name}.DoSomethingLater 

%posttrans 
if [ -e %{_localstatedir}/lib/rpm-state/%{name}.DoSomethingLater ]; then 
# do some conditional stuff 
rm -f %{_localstatedir}/lib/rpm-state/%{name}.DoSomethingLater 
fi