Fix issue #5000: "pm2 update" never ends when running it from a bash scr

feature_5000.py

@@ -0,0 +1,44 @@
+import subprocess
+import sys
+from typing import Tuple
+
+def run_command(command: str) -> Tuple[int, str, str]:
+    """
+    Run a shell command and return the exit code, stdout, and stderr.
+    """
+    try:
+        result = subprocess.run(command, shell=True, check=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)
+        return result.returncode, result.stdout, result.stderr
+    except subprocess.CalledProcessError as e:
+        return e.returncode, e.stdout, e.stderr
+
+def update_pm2():
+    """
+    Update PM2 and return the exit code, stdout, and stderr.
+    """
+    update_command = "npm install pm2@latest -g && pm2 update"
+    return run_command(update_command)
+
+def main():
+    # Update PM2
+    exit_code, stdout, stderr = update_pm2()
+
+    if exit_code == 0:
+        print("PM2 updated successfully.")
+        print("STDOUT:", stdout)
+    else:
+        print("Failed to update PM2.")
+        print("STDERR:", stderr)
+        sys.exit(1)
+
+# Test cases
+if __name__ == "__main__":
+    # Run the main function to update PM2
+    main()
+
+    # Add more test cases if necessary
+    # test_run_command("echo 'Hello, World!'")
+    # test_run_command("false")
+```
+
+This Python script defines a function to run shell commands and a function to update PM2. It also includes a main function to execute the PM2 update and handle the output. The script is designed to be run directly and includes basic error handling and output printing.