diff --git a/Makefile b/Makefile
index 223cafb543cd45210c00e87aaa5aa37238441792..8285bcad268271399cb0c5642d47d83912bcce2a 100644
--- a/Makefile
+++ b/Makefile
@@ -566,9 +566,7 @@ bininstall: _all installdirs $(SUBDIRS_INSTALL) main-bininstall
 	$(INSTALL) -m 755 contrib/scripts/astgenkey "$(DESTDIR)$(ASTSBINDIR)/"
 	$(INSTALL) -m 755 contrib/scripts/autosupport "$(DESTDIR)$(ASTSBINDIR)/"
 	if [ ! -f "$(DESTDIR)$(ASTSBINDIR)/safe_asterisk" -a ! -f /sbin/launchd ]; then \
-		cat contrib/scripts/safe_asterisk | sed 's|__ASTERISK_SBIN_DIR__|$(ASTSBINDIR)|;s|__ASTERISK_VARRUN_DIR__|$(ASTVARRUNDIR)|;s|__ASTERISK_LOG_DIR__|$(ASTLOGDIR)|;' > contrib/scripts/safe.tmp ; \
-		$(INSTALL) -m 755 contrib/scripts/safe.tmp "$(DESTDIR)$(ASTSBINDIR)/safe_asterisk" ; \
-		rm -f contrib/scripts/safe.tmp ; \
+		./build_tools/install_subst contrib/scripts/safe_asterisk "$(DESTDIR)$(ASTSBINDIR)/safe_asterisk"; \
 	fi
 	$(INSTALL) -m 644 include/asterisk.h "$(DESTDIR)$(includedir)"
 	$(INSTALL) -m 644 include/asterisk/*.h "$(DESTDIR)$(ASTHEADERDIR)"
@@ -784,9 +782,7 @@ install-logrotate:
 config:
 	@if [ "${OSARCH}" = "linux-gnu" ]; then \
 		if [ -f /etc/redhat-release -o -f /etc/fedora-release ]; then \
-			cat contrib/init.d/rc.redhat.asterisk | sed 's|__ASTERISK_ETC_DIR__|$(ASTETCDIR)|;s|__ASTERISK_SBIN_DIR__|$(ASTSBINDIR)|;s|__ASTERISK_VARRUN_DIR__|$(ASTVARRUNDIR)|;' > contrib/init.d/rc.asterisk.tmp ; \
-			$(INSTALL) -m 755 contrib/init.d/rc.asterisk.tmp "$(DESTDIR)/etc/rc.d/init.d/asterisk" ; \
-			rm -f contrib/init.d/rc.asterisk.tmp ; \
+			./build_tools/install_subst contrib/init.d/rc.redhat.asterisk  "$(DESTDIR)/etc/rc.d/init.d/asterisk"; \
 			if [ ! -f "$(DESTDIR)/etc/sysconfig/asterisk" ] ; then \
 				$(INSTALL) -m 644 contrib/init.d/etc_default_asterisk "$(DESTDIR)/etc/sysconfig/asterisk" ; \
 			fi ; \
@@ -794,9 +790,7 @@ config:
 				/sbin/chkconfig --add asterisk ; \
 			fi ; \
 		elif [ -f /etc/debian_version ] ; then \
-			cat contrib/init.d/rc.debian.asterisk | sed 's|__ASTERISK_ETC_DIR__|$(ASTETCDIR)|;s|__ASTERISK_SBIN_DIR__|$(ASTSBINDIR)|;s|__ASTERISK_VARRUN_DIR__|$(ASTVARRUNDIR)|;' > contrib/init.d/rc.asterisk.tmp ; \
-			$(INSTALL) -m 755 contrib/init.d/rc.asterisk.tmp "$(DESTDIR)/etc/init.d/asterisk" ; \
-			rm -f contrib/init.d/rc.asterisk.tmp ; \
+			./build_tools/install_subst contrib/init.d/rc.debian.asterisk  "$(DESTDIR)/etc/init.d/asterisk"; \
 			if [ ! -f "$(DESTDIR)/etc/default/asterisk" ] ; then \
 				$(INSTALL) -m 644 contrib/init.d/etc_default_asterisk "$(DESTDIR)/etc/default/asterisk" ; \
 			fi ; \
@@ -804,16 +798,12 @@ config:
 				/usr/sbin/update-rc.d asterisk defaults 50 91 ; \
 			fi ; \
 		elif [ -f /etc/gentoo-release ] ; then \
-			cat contrib/init.d/rc.gentoo.asterisk | sed 's|__ASTERISK_ETC_DIR__|$(ASTETCDIR)|;s|__ASTERISK_SBIN_DIR__|$(ASTSBINDIR)|;s|__ASTERISK_VARRUN_DIR__|$(ASTVARRUNDIR)|;' > contrib/init.d/rc.asterisk.tmp ; \
-			$(INSTALL) -m 755 contrib/init.d/rc.asterisk.tmp "$(DESTDIR)/etc/init.d/asterisk" ; \
-			rm -f contrib/init.d/rc.asterisk.tmp ; \
+			./build_tools/install_subst contrib/init.d/rc.gentoo.asterisk  "$(DESTDIR)/etc/init.d/asterisk"; \
 			if [ -z "$(DESTDIR)" ] ; then \
 				/sbin/rc-update add asterisk default ; \
 			fi ; \
 		elif [ -f /etc/mandrake-release -o -f /etc/mandriva-release ] ; then \
-			cat contrib/init.d/rc.mandriva.asterisk | sed 's|__ASTERISK_ETC_DIR__|$(ASTETCDIR)|;s|__ASTERISK_SBIN_DIR__|$(ASTSBINDIR)|;s|__ASTERISK_VARRUN_DIR__|$(ASTVARRUNDIR)|;' > contrib/init.d/rc.asterisk.tmp ; \
-			$(INSTALL) -m 755 contrib/init.d/rc.asterisk.tmp "$(DESTDIR)/etc/rc.d/init.d/asterisk" ; \
-			rm -f contrib/init.d/rc.asterisk.tmp ; \
+			./build_tools/install_subst contrib/init.d/rc.mandriva.asterisk  "$(DESTDIR)/etc/rc.d/init.d/asterisk"; \
 			if [ ! -f /etc/sysconfig/asterisk ] ; then \
 				$(INSTALL) -m 644 contrib/init.d/etc_default_asterisk "$(DESTDIR)/etc/sysconfig/asterisk" ; \
 			fi ; \
@@ -821,9 +811,7 @@ config:
 				/sbin/chkconfig --add asterisk ; \
 			fi ; \
 		elif [ -f /etc/SuSE-release -o -f /etc/novell-release ] ; then \
-			cat contrib/init.d/rc.suse.asterisk | sed 's|__ASTERISK_ETC_DIR__|$(ASTETCDIR)|;s|__ASTERISK_SBIN_DIR__|$(ASTSBINDIR)|;s|__ASTERISK_VARRUN_DIR__|$(ASTVARRUNDIR)|;' > contrib/init.d/rc.asterisk.tmp ; \
-			$(INSTALL) -m 755 contrib/init.d/rc.asterisk.tmp "$(DESTDIR)/etc/init.d/asterisk" ;\
-			rm -f contrib/init.d/rc.asterisk.tmp ; \
+			./build_tools/install_subst contrib/init.d/rc.suse.asterisk  "$(DESTDIR)/etc/init.d/asterisk"; \
 			if [ ! -f /etc/sysconfig/asterisk ] ; then \
 				$(INSTALL) -m 644 contrib/init.d/etc_default_asterisk "$(DESTDIR)/etc/sysconfig/asterisk" ; \
 			fi ; \
@@ -831,19 +819,13 @@ config:
 				/sbin/chkconfig --add asterisk ; \
 			fi ; \
 		elif [ -f /etc/arch-release -o -f /etc/arch-release ] ; then \
-			cat contrib/init.d/rc.archlinux.asterisk | sed 's|__ASTERISK_ETC_DIR__|$(ASTETCDIR)|;s|__ASTERISK_SBIN_DIR__|$(ASTSBINDIR)|;s|__ASTERISK_VARRUN_DIR__|$(ASTVARRUNDIR)|;' > contrib/init.d/rc.asterisk.tmp ; \
-			$(INSTALL) -m 755 contrib/init.d/rc.asterisk.tmp "$(DESTDIR)/etc/rc.d/asterisk" ; \
-			rm -f contrib/init.d/rc.asterisk.tmp ; \
+			./build_tools/install_subst contrib/init.d/rc.archlinux.asterisk  "$(DESTDIR)/etc/init.d/asterisk"; \
 		elif [ -d "$(DESTDIR)/Library/LaunchDaemons" ]; then \
 			if [ ! -f "$(DESTDIR)/Library/LaunchDaemons/org.asterisk.asterisk.plist" ]; then \
-				sed 's|__ASTERISK_SBIN_DIR__|$(ASTSBINDIR)|;' < contrib/init.d/org.asterisk.asterisk.plist > asterisk.plist ; \
-				$(INSTALL) -m 644 asterisk.plist "$(DESTDIR)/Library/LaunchDaemons/org.asterisk.asterisk.plist"; \
-				rm -f asterisk.plist; \
+				./build_tools/install_subst contrib/init.d/org.asterisk.asterisk.plist "$(DESTDIR)/Library/LaunchDaemons/org.asterisk.asterisk.plist"; \
 			fi; \
 			if [ ! -f "$(DESTDIR)/Library/LaunchDaemons/org.asterisk.muted.plist" ]; then \
-				sed 's|__ASTERISK_SBIN_DIR__|$(ASTSBINDIR)|;' < contrib/init.d/org.asterisk.muted.plist > muted.plist ; \
-				$(INSTALL) -m 644 muted.plist "$(DESTDIR)/Library/LaunchDaemons/org.asterisk.muted.plist"; \
-				rm -f muted.plist; \
+				./build_tools/install_subst contrib/init.d/org.asterisk.muted.plist "$(DESTDIR)/Library/LaunchDaemons/org.asterisk.muted.plist"; \
 			fi; \
 		elif [ -f /etc/slackware-version ]; then \
 			echo "Slackware is not currently supported, although an init script does exist for it."; \
diff --git a/build_tools/install_subst b/build_tools/install_subst
new file mode 100755
index 0000000000000000000000000000000000000000..5b5407aa8c3ef8ea5c15aeb1ee8d8de3333e841e
--- /dev/null
+++ b/build_tools/install_subst
@@ -0,0 +1,43 @@
+#!/bin/sh
+
+# install_subst: install a script while doing path substitution
+
+# install_subst [-d] source destination
+#
+# -d: file is data (rather than script)
+
+install_args=
+if [ "$1" = '-d' ]; then
+	install_args="-m 644"
+	shift
+fi
+
+set -e
+
+tmp=`mktemp install_subst_XXXXXX`
+
+cleanup_tmp() {
+	rm -f "$tmp"
+}
+
+# Delete it on exit
+trap cleanup_tmp 0
+
+src="$1"
+dst="$2"
+sed <"$src" \
+	-e "s|__ASTERISK_DATA_DIR__|$ASTDATADIR|g" \
+	-e "s|__ASTERISK_DB_DIR__|$ASTDBDIR|g" \
+	-e "s|__ASTERISK_ETC_DIR__|$ASTETCDIR|g" \
+	-e "s|__ASTERISK_HEADER_DIR__|$ASTHEADERDIR|g" \
+	-e "s|__ASTERISK_LIB_DIR__|$ASTLIBDIR|g" \
+	-e "s|__ASTERISK_LOG_DIR__|$ASTLOGDIR|g" \
+	-e "s|__ASTERISK_MOD_DIR__|$ASTMODDIR|g" \
+	-e "s|__ASTERISK_MAN_DIR__|$ASTMANDIR|g" \
+	-e "s|__ASTERISK_SBIN_DIR__|$ASTSBINDIR|g" \
+	-e "s|__ASTERISK_SPOOL_DIR__|$ASTSPOOLDIR|g" \
+	-e "s|__ASTERISK_VARLIB_DIR__|$ASTVARLIBDIR|g" \
+	-e "s|__ASTERISK_VARRUN_DIR__|$ASTVARRUNDIR|g" \
+	> "$tmp"
+
+install $install_args "$tmp" "$dst"