Golang has an inbuilt package called os, and that package has a function called OpenFile() that can be used to open a file. We can open a file using the os.OpenFile() function. First, we need to import the os package, and then we can use the method.

One of the fundamental aspects of the UNIX is that everything is a file. We don’t necessarily know what the operating system’s device drivers abstract the file descriptor maps to that.

The operating system provides us the interface to the device in the form of a file. Let’s back to open a file.

How to open file in Golang

The reader and writer interfaces in Golang are similar abstractions. We read and write bytes, without the need to understand where or how the reader gets its data or where the writer is sending the data.

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