Redirect STDOUT Stream for Command to File

Q

How to redirect STDOUT stream from the screen to a file? I want the command to send output data to a file.

✍: FYIcenter.com

A

By default, the STDOUT stream for a command is mapped the screen. If the command is writing data to the STDIN stream, you will see it on the screen.

But, you can use the ">" redirect operator to redirect the STDOUT stream from the screen to a file as shown below:

command options > file-name

For example, the "DIR" command writes a list of files and sub-directories to the STDOUT stream. By default, "DIR" writes the list to the screen. But you can redirect it to a file as shown below:

C:\fyicenter>dir \windows\System32\spool > dir.txt

Now the file dir.txt contains the output of the "DIR" command. If you open it in notepad, you see the following:

 Directory of C:\windows\System32\spool

12/13/2016  11:15 AM    DIR          .
12/13/2016  11:15 AM    DIR          ..
07/13/2009  11:57 PM    DIR          drivers
12/12/2017  07:50 PM    DIR          PRINTERS
07/13/2009  10:20 PM    DIR          prtprocs
12/13/2016  11:14 AM    DIR          SERVERS
12/12/2017  09:51 AM    DIR          tools
               0 File(s)            0 bytes

Note that the "> file-name" direction will replace old content of the file, if it is an existing file.

 

Redirect STDOUT Stream to the End of File

Redirect STDIN Stream for Command to File

Windows Command Syntax

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2017-12-05, 147👍, 0💬