Chdir wraps os.Chdir.

CreateEmpty creates empty file, after creating all ancestor directories that don't exist.

MkdirAll calls os.MkdirAll for each argument.

OK panics if the error value is not nil.

OK1 panics if the error value is not nil.

OK2 panics if the error value is not nil.

Pipe wraps os.Pipe.

ReadAll wraps io.ReadAll and io.Closer.Close.

ReadFile wraps os.ReadFile.

ReadFileString converts the result of ReadFile to a string.

WriteFile writes data to a file, after creating all ancestor directories that don't exist.