Generates a .json file, just in case the Vulkan stops working on NVIDIA GPU due to the missing file

gen_nvidia_vulkan_icd.sh

#!/usr/bin/bash

# RUN AS ROOT
# Generates a .json file, just in case the Vulkan stops working on NVIDIA GPU due to the missing file
# This solved the issue when I couldn't play my games that rely on Vulkan (i.e. Windows games on Steam)
# Source: https://twitter.com/Terry_Hendrix/status/1067506733868666880

cd /usr/share/vulkan/icd.d/
touch nvidia_icd.json

a=`vulkaninfo | grep "Vulkan Instance Version"`
inarr=(${a})
vulkan_ver=${inarr[3]}

echo "{" > nvidia_icd.json
echo -e "\t\"file_format_version\":\"1.0.0\"," >> nvidia_icd.json
echo -e "\t\"ICD\": {" >> nvidia_icd.json
echo -e "\t\t\"library_path\":\"libGLX_nvidia.so.0\"," >> nvidia_icd.json
echo -e "\t\t\"api_version\":\"$vulkan_ver\"" >> nvidia_icd.json
echo -e "\t\"" >> nvidia_icd.json
echo "}" >> nvidia_icd.json