Log USB mounts in a file on Linux

gistfile1.txt

#!/bin/bash

LOGFILE="$HOME/usb_mount_log.txt"
echo "Monitoring USB mount events... Logs will be saved to: $LOGFILE"

# Initialize list of currently mounted devices
existing_mounts=$(lsblk -o NAME,MOUNTPOINT -nr | awk '$2!="" {print $1}')

udevadm monitor --subsystem-match=block --udev | while read -r line; do
    if echo "$line" | grep -q "add"; then
        sleep 1  # Give system time to mount

        current_mounts=$(lsblk -o NAME,MOUNTPOINT -nr | awk '$2!="" {print $1}')
        new_mounts=$(comm -13 <(echo "$existing_mounts" | sort) <(echo "$current_mounts" | sort))

        if [[ -n "$new_mounts" ]]; then
            for dev in $new_mounts; do
                mount_point=$(lsblk -o NAME,MOUNTPOINT -nr | grep "^$dev " | awk '{print $2}')
                timestamp=$(date '+%Y-%m-%d %H:%M:%S')
                message="[$timestamp] USB device $dev mounted at $mount_point"
                echo "$message" | tee -a "$LOGFILE"
                notify-send "USB Device Mounted" "$dev mounted at $mount_point"
            done
            existing_mounts="$current_mounts"
        fi
    fi
done