hg (mercurial) how to delete all unkonwn file or unversion file?

hg (mercurial) how to delete all unkonwn file or unversion file?

On windows

for /F %i in ('hg st -nu') do del %i

On mac
hg st -nu|xargs -I \{ rm \{

这里\{是在命令行中输入的，一个代替字符串，就是前面列表中文件的名称