了解 linux各个目录

使用man hier

HIER(7)                    Linux Programmer's Manual                   HIER(7)

NAME
       hier - Description of the file system hierarchy

DESCRIPTION
       A typical Linux system has, among others, the following directories:

       /      This  is  the  root  directory.   This  is  where the whole tree
              starts.

       /bin   This directory contains executable programs which are needed  in
              single user mode and to bring the system up or repair it.

       /boot  Contains  static files for the boot loader.  This directory only
              holds the files which are needed during the boot  process.   The
              map  installer  and  configuration  files should go to /sbin and
              /etc.

       /dev   Special or device files, which refer to physical  devices.   See
              mknod(1).

       /etc   Contains  configuration  files  which  are local to the machine.

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