Re: Upgrading a package (Do I use $1?)

[Jeff Johnson <jbj JBJ ORG>]

On Tue, Jan 29, 2002 at 09:01:12AM -0500, Mike Baranski wrote:
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> Hi,
> 
> I'm having some trouble upgrading a package.  Installation works great, but 
> then there are some scripts we want to run only when upgrading.  Seems like I 
> read that $1 was an argument that was passed to all of your scripts, and if 
> it was 0 you were uninstalling, 1 you were doing a new install, and > 1 you 
> were doing an upgrade.  This does not appear to be the case, as sometimes it 
> does and sometimes it doesen't work, depending, it seems, on the revision 
> number.  Does anyone have any suggestions?

Yes, $1 in a sciptlet can be used to diffentiate between upgrade and install
pathways. For example
	%preun
	if [ $1 = 0 ]; then
		echo "this is an erase"
	else
		echo "this is an upgrade"
	fi

What's probably tripping you up is that $1 is not a boolean, but rather
the number of instance of packages with the same name that will be installed
after the scriptlet is run. Check "rpm -qa | grep <pkgname> | wc".

73 de Jeff

-- 
Jeff Johnson	ARS N3NPQ
jbj@jbj.org	(jbj@redhat.com)
Chapel Hill, NC