在REPL中使用shell报错

综合讨论区
1 
我的使用版本如下：
Julia Version 0.6.4
Commit 9d11f62bcb* (2018-07-09 19:09 UTC)
Platform Info:
  OS: Windows (x86_64-w64-mingw32)
  CPU: Intel(R) Core(TM) i5 CPU         750  @ 2.67GHz
  WORD_SIZE: 64
  BLAS: libopenblas (USE64BITINT DYNAMIC_ARCH NO_AFFINITY Nehalem MAX_THREADS=16)
  LAPACK: libopenblas64_
  LIBM: libopenlibm
  LLVM: libLLVM-3.9.1 (ORCJIT, nehalem)

问题如下：
ERROR: could not spawn `ls`: no such file or directory (ENOENT)
Stacktrace:
 [1] _jl_spawn(::String, ::Array{String,1}, ::Ptr{Void}, ::Base.Process, ::RawFD, ::RawFD, ::RawFD)at .\process.jl:360
 [2] #378 at .\process.jl:512 [inlined]
 [3] setup_stdio(::Base.##378#379{Cmd}, ::Tuple{RawFD,RawFD,RawFD}) at .\process.jl:499
 [4] #spawn#377(::Nullable{Base.ProcessChain}, ::Function, ::Cmd, ::Tuple{RawFD,RawFD,RawFD}) at .\process.jl:511
 [5] run(::Cmd) at .\process.jl:650
 [6] repl_cmd(::Cmd, ::Base.Terminals.TTYTerminal) at .\client.jl:111
2

Windows的CMD不是POSIX标准，不自带ls，应该用dir

3 
嗯嗯，理解了。谢谢哈