/ Files

Golang file operations library which aims to mirror feature parity with GNU cp

Golang file operations library which aims to mirror feature parity with GNU cp


flop is a Golang file operations library concentrating on safety and feature parity with
GNU cp.
Most administrators and engineers interact with GNU utilities every day, so it makes sense to utilize
that knowledge and expectations for a library that does the same operation in code. flop strategically
diverges from cp where it is advantageous for the programmer to explicitly define the behavior, like
cp assuming that copying from a file path to a directory path means the file should be created inside the directory.
This behavior must be explicitly defined in flop by passing the option AppendNameToPath, otherwise
an error will be returned.

go get -u github.com/homedepot/flop


Basic file copy.

err := flop.SimpleCopy("src_path", "dst_path")

Advanced file copy with options.

options := flop.Options{
    Recursive: true,
    MkdirAll:  true,
err := flop.Copy("src_path", "dst_path", options)


flop won't throw logs at you for no reason, but if you want to follow along with what's going on giving it a logger
can help expose the behavior, or aid in debugging if you are generous enough to contribute.

// the logger just takes a string so format your favorite logger to accept one
import (
	zlog "github.com/rs/zerolog/log"
	llog "github.com/sirupsen/logrus"

func logDebug(msg string) {
		"application": "stuffcopy",

func main() {
	zlog.Logger = zlog.Output(zerolog.ConsoleWriter{Out: os.Stderr})
	err := flop.Copy(src.Name(), dst.Name(), flop.Options{
		InfoLogFunc: zlog.Info().Msg,  // Msg already accepts a string so we can just pass it directly
		DebugLogFunc: logDebug,        // logrus Debug takes ...interface{} so we need to wrap it