根文件系统制作

[lingyun@localhost fulinux]$ clear
[lingyun@localhost fulinux]$ mkdir rootfs
[lingyun@localhost fulinux]$ cd rootfs
[lingyun@localhost rootfs]$ mkdir {bin,dev,etc,lib,mnt,proc,sbin,sys,tmp,usr,var}
[lingyun@localhost rootfs]$ ls
bin  dev  etc  lib  mnt  proc  sbin  sys  tmp  usr  var
[lingyun@localhost rootfs]$ cd usr/
[lingyun@localhost usr]$ mkdir {bin,sbin,lib,share}
[lingyun@localhost usr]$ ls
bin  lib  sbin  share
[lingyun@localhost usr]$ cd ..
[lingyun@localhost rootfs]$ tree
.
|-- bin
|-- dev
|-- etc
|-- lib
|-- mnt
|-- proc
|-- sbin
|-- sys
|-- tmp
|-- usr
|   |-- bin
|   |-- lib