Re: [Help-bash] populating an array with piped output in a loop

[Greg Wooledge]

On Tue, Nov 29, 2011 at 07:28:06PM -0600, Dallas Clement wrote:
> Thanks guys.  That worked like a champ!   How does this process
> substitution work?  I presume it writes the output of the pipe
> commands to a fifo and this syntax causes the read loop to read from
> the fifo.

The implementation varies across platforms.  On HP-UX it creates a
FIFO in /var/tmp.  On Linux and OpenBSD it uses /dev/fd/NN where NN
is some integer.

The command inside the <(...) or >(...) is run in the background, and
the FIFO or /dev/fd/* is connected to it.

There are some examples on http://mywiki.wooledge.org/ProcessSubstitution