diff --git a/script_GCD.sh b/script_GCD.sh
new file mode 100644
index 0000000..a544fdc
--- /dev/null
+++ b/script_GCD.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+n=2
+NOD=1
+
+if [ $a -lt $b ]; then
+    min=$a
+else
+    min=$b
+fi
+
+while [ $n -le $min ]; do
+    if [ $((a % n)) -eq 0 ] && [ $((b % n)) -eq 0 ]; then
+        NOD=$n
+    fi
+    n=$((n + 1))
+done