diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..74c3f9f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+test_data/
diff --git a/create_test_file.sh b/create_test_file.sh
new file mode 100755
index 0000000..a2fb357
--- /dev/null
+++ b/create_test_file.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+
+head -c 10M /dev/urandom > test_data/$(cat /dev/urandom | LC_ALL=C tr -dc 'a-zA-Z0-9' | fold -w 20 | head -n 1
+).bin