Initial commit

usr/local/bin/diagnostics.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+
+check_usb_port() {
+    usb_path=$(udevadm info --query=path --name="$device")
+    # Check the bus this USB device is on
+    bus_num=$(echo "$usb_path" | grep -o 'usb[0-9]*' | grep -o '[0-9]*' | head -n1)
+    # Read the speed from sysfs
+    speed_file="/sys/bus/usb/devices/usb${bus_num}/speed"
+    if [[ -f "$speed_file" ]]; then
+        speed=$(cat "$speed_file")
+        if [[ $speed -lt 1000 ]]; then
+            spd-say -Cw "Warning. USB 2.0 detected. Please power off the Pi and move the USB drive to a USB 3 port for better performance."
+        fi
+    fi
+}
+
+
+# set performance
+echo performance | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
+
+# Find the USB bus speed for the boot drive
+device=$(findmnt / -o SOURCE -n | sed 's/[0-9]*$//')
+if [[ "$device" == /dev/sd* ]]; then
+    check_usb_port
+fi
+
+# File system trim
+rootPartition=$(findmnt / -o SOURCE -n)
+if [[ $(lsblk -b --discard $rootPartition | awk 'NR==2 { print $NF }') -gt 0 ]]; then
+    if ! systemctl is-enabled fstrim.timer ; then
+        sudo systemctl enable fstrim.timer
+    fi
+fi