node.js & create file

node.js & create file node js create file if not exists

node.js & create file

node js create file if not exists

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​​fs.open(path[, flags[, mode]], callback)​​

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File System Flags

refs

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​​https://learnnode.com/​​

const fs = require('fs');
fs.writeFile("/tmp/test", "Hey there!", function(err) {
    if(err) {
        return console.log(err);
    }

    console.log("The file was saved!");
}); 

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fs.closeSync(fs.openSync('/var/log/my.log', 'a'));

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var fs = require('fs');
var stream = fs.createWriteStream("my_file.txt");
stream.once('open', function(fd) {
  stream.write("My first row\n");
  stream.write("My second row\n");
  stream.end();
})

// Just open the file and handle the error when it's not there.



function createFile(filename) {
  fs.open(filename,'r',function(err, fd){
    if (err) {
      fs.writeFile(filename, '', function(err) {
          if(err) {
              console.log(err);
          }
          console.log("The file was saved!");
      });
    } else {
      console.log("The file exists!");
    }
  });
}