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<TITLE>Maximum RPM (RPM):Using RPM to Upgrade Packages:EarthWeb Inc.-</TITLE>

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<!-- ISBN=0672311054 //-->

<!-- TITLE=Maximum RPM (RPM)//-->

<!-- AUTHOR=Edward Bailey//-->

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<A NAME="PAGENUM-52"><P>Page 52</P></A>





<P>In this case, a package has been installed. As expected, its scripts are executed. Next, let's

upgrade this package:

</P>

<!-- CODE //-->

<PRE>

# rpm -U bother-3.5-1.i386.rpm

This is the bother 3.5 preinstall script

This is the bother 3.5 postinstall script

This is the bother 2.7 preuninstall script

This is the bother 2.7 postuninstall script

#

</PRE>

<!-- END CODE //-->



<P>This is a textbook example of the sequence of events during an upgrade. The new version

of the package is installed (as shown by the pre- and postinstall scripts being executed).

Finally, the previous version of the package is removed (showing the pre- and postuninstall scripts

being executed). There are really no surprises here. It worked just the way it was meant to.

</P>



<P>This time, let's use the --noscripts option when the time comes to perform the upgrade:

</P>

<!-- CODE SNIP //-->

<PRE>

# rpm -i bother-2.7-1.i386.rpm

This is the bother 2.7 preinstall script

This is the bother 2.7 postinstall script

#

</PRE>

<!-- END CODE SNIP //-->



<P>Again, the first package is installed and its scripts are executed. Now let's try the upgrade

using the --noscripts option:

</P>

<!-- CODE //-->

<PRE>

# rpm -U --noscripts bother-3.5-1.i386.rpm

This is the bother 2.7 preuninstall script

This is the bother 2.7 postuninstall script

#

</PRE>

<!-- END CODE //-->



<P>The difference here is that the --noscripts option prevented the new package's scripts

from executing. The scripts from the package being erased were still executed.

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