initial creation

py3interm/EXAMPLES/external_programs.py

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+#!/usr/bin/env python
+import os
+
+os.system("hostname")  # <1>
+
+with os.popen('netstat -an') as netstat_in:  # <2>
+    for entry in netstat_in:  # <3>
+        if 'ESTAB' in entry:  # <4>
+            print(entry, end='')
+print()