skip installation by meeting a condition in pre section of Spec file in RPM packaging

Fawad Ali faw.studies at
Thu Feb 17 12:26:37 UTC 2011

Hi All,
       I am new to rpm and to rpm packaging. I was asked to copy a
war file from one location to another. through rpm. I packaged that.
So what it does is like below.
1) Copy file to AUTODEPLOY folder in tomcat server
2) From the AUTODEPLOY folder the tomcat server picks up the war file
and explodes it in WEBAPPS folder and removes the content from

Now if I want to REINSTALL, it should first check that whether WEBAPPS
contains the exploded war file or not. If yes, then it should display
that package is already installed and skip the installation, if the
web apps does not contain the exploded war file then it should force
the installation process.

Can anyone tell me how can I do that.

Thanks for your help in advance.
S. Fawad Ali Shah
Software Engineer,
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