镜像文件

zsl@zsl-VirtualBox:~/works/tools$ mkyaffs2image-mlc2 rootfs_qtopia_qt4-mlc2.img
mkyaffs2image: image building tool for YAFFS2 built May 18 2012
usage: mkyaffs2image dir image_file [convert]
           dir        the directory tree to be converted
           image_file the output file to hold the image
           'convert'  produce a big-endian image from a little-endian machine

这到底是什么错啊，怎么解决

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