#!/usr/bin/env bash

declare -A all_modules # 0 module is used 1 module is not used

for i in $(find /lib/modules/$(uname -r) -type f -name '*.ko*'); do 
    module_name=$(basename $i);
    module_without_extension=$(echo $module_name | cut -f 1 -d '.')
    module_name_normalized=$(echo $module_without_extension | sed 's/-/_/g')
    all_modules[$module_name_normalized]=1
done

IFS=$'\n'
for i in $(lsmod | sed '1d;$d'); do 
    module_name=$(echo $i | awk '{print $1}')
    echo "$module_name"
    if [[ -v all_modules[$module_name] ]]; then
        all_modules[$module_name]=0
    else
        echo "Warning! There is no $module_name module in all_modules array - adding it to all modules but you should check"
        all_modules[$module_name]=0
    fi
done

for i in "${!all_modules[@]}"
do
  if [ ${all_modules[$i]} -eq 0 ]; then
      echo "$i is loaded"
  else
      echo "$i is not used"
  fi
done