tmux-kanagawa/scripts/gpu_usage.sh

#!/usr/bin/env bash
# setting the locale, some users have issues with different locales, this forces the correct one
export LC_ALL=en_US.UTF-8

# function for getting the refresh rate
get_tmux_option() {
  local option=$1
  local default_value=$2
  local option_value=$(tmux show-option -gqv "$option")
  if [ -z $option_value ]; then
    echo $default_value
  else
    echo $option_value
  fi
}

get_platform()
{
  case $(uname -s) in
    Linux)
      gpu=$(lspci -v | grep VGA | head -n 1 | awk '{print $5}')
      echo $gpu
      ;;

    Darwin)
      # TODO - Darwin/Mac compatability
      ;;

    CYGWIN*|MINGW32*|MSYS*|MINGW*)
      # TODO - windows compatability
      ;;
  esac
}
get_gpu()
{
  gpu=$(get_platform)
  if [[ "$gpu" == NVIDIA ]]; then
    usage=$(nvidia-smi | grep '%' | awk '{ sum += $13 } END { printf("%d%%\n", sum / NR) }')
  else
    usage='unknown'
  fi
  echo $usage
}
main()
{
  # storing the refresh rate in the variable RATE, default is 5
  RATE=$(get_tmux_option "@dracula-refresh-rate" 5)
  gpu_usage=$(get_gpu)
  echo "GPU $gpu_usage"
  sleep $RATE
}
# run the main driver
main