简单命令
===================


.. toctree::
   :maxdepth: 2

   simples/ls
   simples/tree
   simples/pwd
   simples/date
   simples/cat
   simples/cp
   simples/head
   simples/less
   simples/ln
   simples/mkdir
   simples/mv
   simples/rm
   simples/rmdir
   simples/tail
   simples/touch
   simples/wc
   simples/echo