add mongodb installation notes

Sascha Schulz

vor 4 Tagen c98907289eb9db87a5bea37f2e2c39d6d1f59ce5

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const fs = require("fs"); 
 
const readStream = fs.createReadStream("./in.txt"); 
const writeStream = fs.createWriteStream("./out.txt"); 
 
readStream.on("data", (data /* Buffer */) => { 
    // process data here 
    writeStream.write(data) 
}); 
 
readStream.on("end", (data) => { 
    // stream has finished, e.g. EOF (end of file) 
});