birthtime()
Returns the birth time for file.
File.new("testfile").birthtime #=> Wed Apr 09 08:53:14 CDT 2003
If the platform doesn’t have birthtime, raises NotImplementedError.
static VALUE rb_file_birthtime(VALUE obj) { rb_io_t *fptr; struct stat st; GetOpenFile(obj, fptr); if (fstat(fptr->fd, &st) == -1) { rb_sys_fail_path(fptr->pathv); } return stat_birthtime(&st); }