[ale] FD 3 on gpg?

[Michael B. Trausch]

On 11/17/2013 11:56 PM, Neal Rhodes wrote:
> Which actually works.    I cannot fathom how.    The FM says it will 
> read the passphrase from file descriptor 3.  Uh...Stdin, Stdout, 
> Stderr,  There goes 0, 1, 2.    uh, that would be a file defined 
> within gpg? 

You can open new file descriptors from the shell and pass things 
through, or (as is often the case with communication between a parent 
and child process) open pipes as file descriptors and use them as a comm 
channel.

For example, if you have a UNIX socket that you'd like to connect to 
your application on fd 3 from the shell:

$ application 3<>/path/to/socket

You can do this for any number, including the standard 
output/input/error streams.

     --- Mike

-- 

	Michael B. Trausch

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