How to get spec file from existing rpm?

shaybery · 01-10-2009, 04:16 PM

I want to change some thing inside the post install script of an existing rpm.
there is any way to create a nearest spec file of this rpm, in order to change a bit the post install script inside this spec and then create again the rpm with the fixed spec file?

no body wrote any program that can create spec file(99% identical from the orig spec file?)?

billymayday · 01-10-2009, 04:20 PM

Can you get the source rpm?

It would be useful to put your distro in your profile.

shaybery · 01-11-2009, 12:51 AM

Quote:

Originally Posted by billymayday

Can you get the source rpm?

It would be useful to put your distro in your profile.

It would be useful to put your distro in your profile.[/QUOTE]

Redhat 5.x.
I don't have the source rpm, I have only the binary.
how do i create the spec file from rpm binary file?
I guess that there is any program that runs rpm -qpi <rpm> and get the identification of the spec file, and run rpm -qp --scripts <rpm> and get the un\pre\post install scripts. I guess that it's enough for creating the spec file of this rpm.

Can you explain a bit what is the source rpm?

Valery Reznic · 01-11-2009, 01:15 AM

Quote:

Originally Posted by shaybery

It would be useful to put your distro in your profile.

Redhat 5.x.
I don't have the source rpm, I have only the binary.
how do i create the spec file from rpm binary file?
I guess that there is any program that runs rpm -qpi <rpm> and get the identification of the spec file, and run rpm -qp --scripts <rpm> and get the un\pre\post install scripts. I guess that it's enough for creating the spec file of this rpm.

Can you explain a bit what is the source rpm?[/QUOTE]
You can use rpmrebuild - http://rpmrebuil.sf.net
It's exactly what it did - run query on rpm db to recreate *.spec file

shaybery · 01-11-2009, 06:44 AM

rpmrebuild is the right tool for that.