diff --git a/2021.01.18_run_programs_sequentially/run_qsub.py b/2021.01.18_run_programs_sequentially/run_qsub.py
new file mode 100644
index 0000000..deb10e0
--- /dev/null
+++ b/2021.01.18_run_programs_sequentially/run_qsub.py
@@ -0,0 +1,8 @@
+import os
+import time
+os.system('qsub task_1.sh')
+while True:
+    if os.path.exists('./complete_1.txt'):
+        os.system('qsub task_2.sh')
+        break
+    time.sleep(180)
\ No newline at end of file