The os.ReadFile function used to be part of the 'io/ioutil' package (and it still is), but that package has now been deprecated, and its functions have all been moved to the 'os' package. We read the file by using the os.ReadFile function, which loads the entire contents of the file into memory: this can be a problem, if we’re working with a huge file that requires large amounts of free memory, but with our small file, it’s okay. This is the complete contents of the file that we’re reading (just a single sentence spread over two lines): test.txt This is anĪnd that is, of course, exactly what gets printed out to the console when we run the code above. We’ll just get all of the contents of a file and print it out to the console: package mainįileContents, err := os.ReadFile(fileName) We’re going to start by doing something very simple in order to refresh our memories about file handling. Reading the Records of a CSV File Line by Line.Reading a CSV File and Formatting its Data.

Reading a File in Chunks to Save Memory.A Better Way to Read a File Line by Line.The Simplest Way to Read a File Line by Line.

Golang write to file