RPM installation %post macro works on terminal but not on GUI

Question

I have created my own .rpm file. The installation works prefect on the command line but doesn't work properly when i am doing it from the GUI.

The only thing that doesn't work from the GUI is the %post script. I try to invoke the browser post installation, works when i run through the command line but not through GUI.

Here is the .spec file used for rpm building

Name:sample_rpm
Version:1.0
Release:1%{?dist}
Summary:Sample RPM package for testing post install script

Group:Development/Tools
License:GPL
URL:None
Source0:sample_rpm.tar.gz

%description
Sample rpm for testing post install script

%prep
%setup -n sample_rpm

%install
rm -rf $RPM_BUILD_ROOT
mkdir -p "$RPM_BUILD_ROOT/opt/sample_rpm"
cp -R * "$RPM_BUILD_ROOT/opt/sample_rpm"

%post
exec "/usr/bin/firefox" "http://www.google.com" &

%clean
rm -rf $RPM_BUILD_ROOT

%files
/opt/sample_rpm/
%defattr(-,root,root,-)
%doc

%changelog

Thanks in advance!

Answer 1

First define a macro e.g:

%define runcommand() ( /usr/bin/firefox http://google.com ) 

Then under the %post section run %runcommand. Since the package requires root access and root the %post macro won't be able to find a DISPLAY. Exporting DISPLAY environment variable should solve this problem. For example

......
%post
export DISPLAY=":0.0"
%runcommand
.........

Finally, use rpmlint -i sample_rpm.spec to check if there are errors. If no errors there, build the package using rpmbuild -ba sample_rpm.spec