Initial

roles/base/files/system_setup/image_prep.sh

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+#!/bin/bash
+
+
+#### Clear log files
+find /var/log -type f -name "*log" -exec truncate -s 0 {} \;
+truncate -s 0 /var/log/*tmp
+
+
+#### Clear user files
+find /home -type f -name .bash_history -exec rm {} \;
+
+if [ -f /root/.bash_history ]; then
+  rm /root/.bash_history
+fi
+
+find /home -type f -name .viminfo -exec rm {} \;
+if [ -f /root/.viminfo ]; then
+  rm /root/.viminfo
+fi

roles/base/files/system_setup/openssh_issue.net

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+Use of this system is private. If you are not authorized, disconnect immediately.
+Failure to comply will result in your destruction.
+
+

roles/base/files/system_setup/pi_cpu_temp.py

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+#!/usr/bin/env python3
+
+# from:
+# https://www.pragmaticlinux.com/2020/06/check-the-raspberry-pi-cpu-temperature/
+
+
+def main():
+    """
+    Program to demonstrate how to obtain the current value of the CPU temperature.
+    """
+    print('Current CPU temperature is {:.2f}°C.'.format(get_cpu_temp()))
+    print('CPU begins throttling at 60°C, and reaches critical at 80°C.')
+
+
+def get_cpu_temp():
+    """
+    Obtains the current value of the CPU temperature.
+    :returns: Current value of the CPU temperature if successful, zero value otherwise.
+    :rtype: float
+    """
+    # Initialize the result.
+    result = 0.0
+    # The first line in this file holds the CPU temperature as an integer times 1000.
+    # Read the first line and remove the newline character at the end of the string.
+    with open('/sys/class/thermal/thermal_zone0/temp') as f:
+        line = f.readline().strip()
+    # Test if the string is an integer as expected.
+    if line.isdigit():
+        # Convert the string with the CPU temperature to a float in degrees Celsius.
+        result = float(line) / 1000
+    # Give the result back to the caller.
+    return result
+
+
+if __name__ == "__main__":
+    main()