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Node.js includes fs module to access physical file system. The fs module is responsible for all the asynchronous or synchronous file I/O operations.

Reading File

Use fs.readFile() method to read the physical file asynchronously.

fs.readFile(fileName [,options], callback)

Writing File

Use fs.writeFile() method to write data to a file. If file already exists then it overwrites the existing content otherwise it creates a new file and writes data into it.

fs.writeFile(filename, data[, options], callback)
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Nahid Mahamud

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