What is the required syntax to redirect standard input/output on Windows PowerShell?
On Unix, we use:
$./program <input.txt >output.txt
How do I execute the same task in PowerShell?
You can't hook a file directly to stdin, but you can still access stdin.
Get-Content input.txt | ./program > output.txt
For output redirection you can use:
command > filename Redirect command output to a file (overwrite)
command >> filename APPEND into a file
command 2> filename Redirect Errors
Input redirection works in a different way. For example see this Cmdlet http://technet.microsoft.com/en-us/library/ee176843.aspx
来源：https://stackoverflow.com/questions/11447598/redirecting-standard-input-output-in-windows-powershell