diff --git a/27-functional-programming/log-parser-exp/Makefile b/27-functional-programming/log-parser-exp/Makefile
index 87685d5..1a795c2 100644
--- a/27-functional-programming/log-parser-exp/Makefile
+++ b/27-functional-programming/log-parser-exp/Makefile
@@ -1,25 +1,29 @@
 SHELL := /bin/bash
-LINES = echo -e ">> log.txt has $$(wc -l log.txt | cut -f1 -d' ') lines"
+LINES = $$(wc -l log.txt | cut -f1 -d' ')
+ECHO_LINES = echo -e ">> log.txt has $(LINES) lines"
 
-ifeq ($(n),)
-	n := 18
-endif
-
-s:
+s: 
 	time go run . < log.txt
 
-r:
+r: 
 	go run . < log.txt
 
-# make n=18
+n ?= 18
 load: restore
-	@echo "enlarging the file with itself, please wait..."
-	@for i in {1..$(n)}; do awk 1 log.txt log.txt > log_.txt; mv log_.txt log.txt; rm -f log_.txt; done
-	@$(LINES)
+	@echo "enlarging the file with itself, please wait..."	
+
+	@for i in {1..$(n)}; do \
+		awk 1 log.txt log.txt > log_.txt; \
+		mv log_.txt log.txt; \
+		rm -f log_.txt; \
+	done
+	
+	@$(ECHO_LINES)
 
 restore:
-	@$(LINES)
-	git checkout log.txt
-	
+	@echo "restoring the file..."
+	@git checkout log.txt
+	@$(ECHO_LINES)
+
 lines:
-	@$(LINES)
\ No newline at end of file
+	@$(ECHO_LINES)
\ No newline at end of file
diff --git a/27-functional-programming/log-parser-exp/main.go b/27-functional-programming/log-parser-exp/main.go
index 6f1524d..77bfc34 100644
--- a/27-functional-programming/log-parser-exp/main.go
+++ b/27-functional-programming/log-parser-exp/main.go
@@ -41,6 +41,14 @@ Result    -> report.Line
 
 notUsing = report.Not
 
+pl := newPipeline(pipeOpts{
+  from:     fastTextReader(os.Stdin),
+  filterBy: notUsing(domainExtFilter("com", "io")),
+  groupBy:  domainGrouper,
+})
+
+err := pl.start()
+
 _, err := report.New().
 	From(report.TextReader(os.Stdin)).
 	To(report.TextWriter(os.Stdout)).