Fix Vagrant NFS Bash Script

fix-vagrant-nfs.sh

#!/bin/bash

echo "\r"
echo "This script will attempt to resolve Vagrant-related"
echo "nfsd issues on macOS by removing all entries from"
echo "/etc/exports and restarting nfsd."
echo "\r"

# Ask user to confirm execution.
read -r -p "Would you like to continue? [y/N]: " response

echo "\r"

# Convert response string to lowercase.
response=$(echo "$response" | tr '[A-Z]' '[a-z]')

# Check whether to continue execution.
if [[ "$response" =~ ^(yes|y)$ ]]; then

  # Check broadly if user is root or has sudo access.
  if [ "$UID" -ne 0 ]; then
    echo "This operation requires administrative access."
    echo "You may be prompted for your password."
    echo "\r"
  fi
  
  current_date=$(date +"%Y%m%d-%H%M%S")
  filename="/etc/exports.$current_date"
  
  # Copy existing /etc/exports file to backup file.
  sudo cp /etc/exports "$filename"
  echo "Backing up /etc/export to $filename."
  
  # Delete the existing /etc/exports file,
  # as it may be corrupted.
  sudo rm -f /etc/exports
  echo "Removing all entries from /etc/exports."
  
  # Create a new empty file at /etc/exports
  sudo touch /etc/exports
  
  # Stop and start the nfsd service.
  # Note: The `nfsd restart` command isn't used
  # as it's not verbose.
  sudo nfsd stop
  sudo nfsd start
  
  # Print the status of the nfsd service.
  sudo nfsd status
else
  echo "No changes were made."
fi