chmod

chattr释义：

chattr

例句：

With kernel 2.4.19_pre5， synchronous mounts of ext3 filesystems and "chattr +S"'d files now perform about ten times faster than they did previously.

对于内核 2.4.19_pre5，现在同步安装 ext3 文件系统和“chattr +S”文件比从前快大约十倍。