<programlisting>%post
if [ $1 -eq 1 ]; then
- # On install, enable (but don't start) the units by default
+ # On install (not upgrade), enable (but don't start) the
+ # units by default
/bin/systemctl enable foobar.service foobar.socket >/dev/null 2>&1 || :
- # Alternatively, just call /bin/systemctl daemon-reload here,
- # if the daemon should not be enabled by default on package
+ # Alternatively, just call
+ # /bin/systemctl daemon-reload >/dev/null 2>&1 || :
+ # here, if the daemon should not be enabled by default on
# installation
fi
%preun
if [ $1 -eq 0 ]; then
- # On uninstall, disable and stop the units
+ # On uninstall (not upgrade), disable and stop the units
/bin/systemctl disable foobar.service foobar.socket >/dev/null 2>&1 || :
/bin/systemctl stop foobar.service foobar.socket >/dev/null 2>&1 || :
fi
%postun
-# On upgrade and uninstall, reload init system configuration, to make systemd honour changed unit files
+# Reload init system configuration, to make systemd honour changed
+# or deleted unit files
/bin/systemctl daemon-reload >/dev/null 2>&1 || :
if [ $1 -ge 1 ] ; then
- # Optionally, on upgrade, restart the daemon
+ # On upgrade (not uninstall), optionally, restart the daemon
/bin/systemctl try-restart foobar.service >/dev/null 2>&1 || :
fi</programlisting>