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Defining scripts for subpackages

Much as you define separate %files and %description sections for subpackages, you can also define install and uninstall scripts for subpackages. The syntax is similar to that for the %files and %description sections:
%pre subpackage
For example, Listing 11-2 shows the scripts from the VNC package.
Listing 11-2: VNC package install and uninstall scripts.
%post server
if [ "$1" = 1 ]; then
/sbin/chkconfig --add vncserver
%preun server
if [ "$1" = 0 ]; then
/sbin/service vncserver stop >/dev/null 2>&1
/sbin/chkconfig --del vncserver
%postun server
if [ "$1" -ge "1" ]; then
/sbin/service vncserver condrestart >/dev/null 2>&1