Read File as Env

TODO: collapasable, copyable, download, etc

Using dotenv and nodejs, how would I read a file at /etc/foo.env in as env variables if and only if it exists?To read a file such as /etc/foo.env as environment variables in Node.js using the dotenv package, and only do this if the file exists, you can use the fs module to check the existence of the file before loading it with dotenv. Here's how you can do it:

1. Install dotenv: If you haven't already installed the dotenv package, you can add it to your project by running:

   npm install dotenv
   

2. Create your script: Use the fs module to check for the file's existence and dotenv to load the variables. Here’s a simple script that does this:

   const fs = require('fs');
   const dotenv = require('dotenv');
   
   const envPath = '/etc/foo.env';
   
   // Check if the file exists
   if (fs.existsSync(envPath)) {
       // Load environment variables from the specified file
       const result = dotenv.config({ path: envPath });
   
       if (result.error) {
           throw result.error;
       }
   
       console.log('Environment variables loaded successfully.');
       console.log(process.env); // Display loaded environment variables
   } else {
       console.log('No environment file found at the specified path.');
   }
   

3. Run your script: Execute your script with Node.js. If the environment file exists, it will load the variables into process.env, and if it doesn't, it will inform you that no file was found.

This approach ensures that you are only attempting to load the environment variables if the file indeed exists, avoiding any errors that might occur from trying to load a non-existent file.

Read File as Env created at Tue Jan 20 1970 20:13:45 GMT+0000 (Coordinated Universal Time)