16 lines
422 B
JavaScript
16 lines
422 B
JavaScript
const fs = require('fs')
|
|
const path = require('path')
|
|
|
|
const filepath = path.join(process.cwd(), 'hello.txt')
|
|
|
|
fs.readFile(filepath, 'utf8', function (err, contents) {
|
|
if (err) {
|
|
return console.log(err)
|
|
}
|
|
console.log('File Contents:', contents)
|
|
const upperContents = contents.toUpperCase()
|
|
fs.writeFile(filepath, upperContents, function (err) {
|
|
if (err) throw err
|
|
console.log('File updated.')
|
|
})
|
|
}) |