是否有另一种方法可以识别rpm规范文件中与rpm命令一起使用的参数或参数

Question

In the rpm spec file, I need to identify the user has used rpm -ivh or rpm -Uvh . In general, $1 value will be verified in the %pre . But in my case in the new rpm, we are modifying install location. In this case, when is check $1 is showing the same value for both the -ivh and -Uvh .

%pre
     if [ "$1" -ge 2 ]; then
           legacy_exist=true
     if legacy_exist; then
           rm -rf *.txt
     else
           mkdir xxx
     fi
pre

%pre
     if [ "$1" -ge 2 ]; then
           legacy_exist=false
     if legacy_exist; then
           rpm -e xxx
     else
           mkdir xxx
     fi
pre

I want the removal of files to be done only in -Uvh usage but in my case when I have path changed rpm while setting true in both case and $1 value is showing 2 only. If the rpm is not having the installation path change the code works fine.

Answer 1

You should not check the command line args. rpm -U behaves exactly the same way as rpm -i when there is no package of that name installed.

The $1 variable is the number of packages of this name which will be left on the system when the action completes. For a full set of possible values see: https://docs.fedoraproject.org/en-US/packaging-guidelines/Scriptlets/#_syntax

And please do not call rpm from scriptlet. RPM is not reentrant. Sooner or later you will break rpmdb.