readFileChunkWise.go

func readFileChunkWise() {
	chunkSize := 10 // processing the file 10 bytes at a time
	b := make([]byte, chunkSize) 
	file, err := os.Open("./folder/test.txt);
	if err != nil {
		log.Fatal(err)
	}
	for {
		bytesRead, _ := file.Read(b);
		if bytesRead == 0 { // bytesRead will be 0 at the end of the file.
			break
		}
    		// process the current bytes read
    		process(b, bytesRead);
	}
	file.Close();
}