diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..f3ac583
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*.bin
\ No newline at end of file
diff --git a/bookNode b/bookNode
deleted file mode 100755
index 81fa4aa..0000000
Binary files a/bookNode and /dev/null differ
diff --git a/run b/run
index 9003232..ce7a6a1 100755
--- a/run
+++ b/run
@@ -5,5 +5,6 @@
 # echo "run the program..."
 # ./program
 
-gcc work1/single.c -o single
-./single
\ No newline at end of file
+rm -r single.bin
+
+gcc work1/single.c -o single.bin && ./single.bin
\ No newline at end of file
diff --git a/single b/single
deleted file mode 100755
index a8f38d4..0000000
Binary files a/single and /dev/null differ
diff --git a/test b/test
deleted file mode 100755
index b10cf93..0000000
Binary files a/test and /dev/null differ
diff --git a/tests/run b/tests/run
index a75722b..e88bfdd 100755
--- a/tests/run
+++ b/tests/run
@@ -1,5 +1,4 @@
 #!/bin/bash
 
-rm -r work1
-
-gcc work1.c -o work1 && ./work1
\ No newline at end of file
+rm -r work1.bin
+gcc work1.c -o work1.bin && ./work1.bin
\ No newline at end of file