file = pwd.absolutize(file);
if (next.isRelative())
next = pwd.absolutize(next);
if (vfs.exists(shell.getUserCtx(), file, true) && vfs.exists(shell.getUserCtx(), next, true)) {
vfs.moveBefore(shell.getUserCtx(), file, next);
}
} else if (params.length == 1) {
FileName file = new FileName(params[0]);
if (file.isRelative())