diff --git a/Repositories/otago_eprints3/Makefile b/Repositories/otago_eprints3/Makefile
index 2b01fda..e8f713b 100755
--- a/Repositories/otago_eprints3/Makefile
+++ b/Repositories/otago_eprints3/Makefile
@@ -25,6 +25,10 @@
 # EPRINTSSTATS: /path/to/EPrintsStats/installation
 # PHPSURVEYOR: /path/to/phpSurveyor/installation (deprecated)
 #
+# Utilities:
+# SUDO: command to run sudo as the eprints user
+# GREP: command to run a grep that supports the -q switch
+#
 # Required commands:
 # pgrep
 #
@@ -59,13 +63,13 @@
 	@$(SUDO) rsync --verbose --cvs-exclude --exclude=Makefile \
 		--exclude='*.make' --exclude='*_src.*' \
 		--recursive --times . $(EPRINTS_ROOT)/archives > .del-rsync-output
-	@-grep $(ARCHIVE_NAME) .del-rsync-output
-	@-grep -q "cfg\\.d/\\(10_core\\)\\|\\(20_baseurls\\)" .del-rsync-output && $(MAKE) generate_apacheconf
-	@-grep -q "cfg/subjects" .del-rsync-output && $(MAKE) import_subjects
-	@-grep -q "cfg/\\(static\\|lang\\)/" .del-rsync-output && $(MAKE) generate_static
-	@-grep -q "\\(cfg/subjects\\)\\|\\(cfg/citations\\)" .del-rsync-output && $(MAKE) generate_views
-	@-grep -q "\\(cfg\\.d/eprint_render\\)\\|\\(cfg/citations\\)\\|\\(document_formats\\)" .del-rsync-output && $(MAKE) generate_abstracts
-	@-grep -q "\\(\\.conf\\)\\|\\(\\.pl\\)\\|\\(\\.xml\\)" .del-rsync-output && $(MAKE) reload_config
+	@-$(GREP) $(ARCHIVE_NAME) .del-rsync-output
+	@-$(GREP) -q "cfg\\.d/\\(10_core\\)\\|\\(20_baseurls\\)" .del-rsync-output && $(MAKE) generate_apacheconf
+	@-$(GREP) -q "cfg/subjects" .del-rsync-output && $(MAKE) import_subjects
+	@-$(GREP) -q "cfg/\\(static\\|lang\\)/" .del-rsync-output && $(MAKE) generate_static
+	@-$(GREP) -q "\\(cfg/subjects\\)\\|\\(cfg/citations\\)" .del-rsync-output && $(MAKE) generate_views
+	@-$(GREP) -q "\\(cfg\\.d/eprint_render\\)\\|\\(cfg/citations\\)\\|\\(document_formats\\)" .del-rsync-output && $(MAKE) generate_abstracts
+	@-$(GREP) -q "\\(\\.conf\\)\\|\\(\\.pl\\)\\|\\(\\.xml\\)" .del-rsync-output && $(MAKE) reload_config
 	@rm -f .del-rsync-output