FileCopyRecursively copies recursively files from one directory to other, being similar to a `cp -R` command.

FileListRecursively list recursively all files inside a directory.

FileListRecursivelyWithoutDirs list recursively all files inside a directory, excluding directories.

FindString takes a slice and looks for a string in it.

HTTPDownloadFile downloads a url and store it in local filepath.

NewDirectoryWithKeep creates a directory and an empty .keep file to maintain filetree in git.

NewFileIfNotExist creates a empty file if is not present, or do nothing if file already exists.

NewFileWithContentIfNotExist creates a file with a speficied content only if file doesn't exist.

RemoveDuplicatedStrings returns a string slice without duplicated elements.