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- Specifies arguments for the command specified earlier.

You can use the following redirection operators in this box:

file
Reads stdin from file.

file
Writes stdout to file.

>> file
Appends stdout to file.

2> file
Writes stderr to file.

2>> file
Appends stderr to file.

2> &1
Sends stderr (2) output to same location as stdout (1).

1> &2
Sends stdout (1) output to same location as stderr (2).

In most cases, these operators are applicable only to console applications.
 
 
 
ref:
https://msdn.microsoft.com/en-us/library/kcw4dzyf.aspx
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