Installer script

core/system.py

@@ -0,0 +1,6 @@
+import subprocess
+
+
+def run_cmd(cmd: str, expected_code: int = 0, ignore_return_code: bool = False) -> str:
+    res = subprocess.run(cmd, shell=True, stdout=subprocess.PIPE)
+    return res.stdout.decode() if ignore_return_code or res.returncode == expected_code else None