diff --git a/OS/bash/Week4/q1.sh b/OS/bash/Week4/q1.sh
new file mode 100644
index 0000000..93c958b
--- /dev/null
+++ b/OS/bash/Week4/q1.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+echo "Entered file will be copied"
+
+cp "$1" "duplicate_$1"
+echo "File duplicated"
\ No newline at end of file