之前一直很不明白为什么 

child_process.spawn(command[, args][, options])

 

• shell  |  If true, runs command inside of a shell. Uses '/bin/sh' on UNIX, and 'cmd.exe' on Windows. A different shell can be specified as a string. The shell should understand the -c switch on UNIX, or /d /s /c on Windows. Defaults to false (no shell).

 

对shell的解释！！！

 

尤其是 /d /s /c 到底是什么鬼？？？

 

后来我google终于明白了！！！

 

Microsoft Windows XP [Version 5.1.2600](C) Copyright 1985-2001 Microsoft Corp.C:\>cmd /?Starts a new instance of the Windows XP command interpreterCMD [/A | /U] [/Q] [/D] [/E:ON | /E:OFF] [/F:ON | /F:OFF] [/V:ON | /V:OFF]    [[/S] [/C | /K] string]/C      Carries out the command specified by string and then terminates/K      Carries out the command specified by string but remains/S      Modifies the treatment of string after /C or /K (see below)/Q      Turns echo off/D      Disable execution of AutoRun commands from registry (see below)/A      Causes the output of internal commands to a pipe or file to be ANSI/U      Causes the output of internal commands to a pipe or file to be        Unicode/T:fg   Sets the foreground/background colors (see COLOR /? for more info)/E:ON   Enable command extensions (see below)/E:OFF  Disable command extensions (see below)/F:ON   Enable file and directory name completion characters (see below)/F:OFF  Disable file and directory name completion characters (see below)/V:ON   Enable delayed environment variable expansion using ! as the        delimiter. For example, /V:ON would allow !var! to expand the        variable var at execution time.  The var syntax expands variables        at input time, which is quite a different thing when inside of a FOR        loop./V:OFF  Disable delayed environment expansion.