redirecrtion bash
Redirection to network addresses
Bash treats some paths as special and can do some network communication
by writing to /dev/{udp|tcp}/host/port. Bash cannot setup a listening
server, but can initiate a connection, and for TCP can read the results
at least.
For example, to send a simple web request one could do:
sleep 5
exec 2> >(tee >(nc localhost 3000))
and the results of www.google.com’s default web page will be printed
to stdout.