Bash IPC made easy with coproc

Source: http://unix.stackexchange.com/questions/86270/how-do-you-use-the-command-coproc-in-bash

$ coproc awk '{print $1 $2 $3;fflush();}'

$ echo one two three >&${COPROC[1]}

$ read -ru ${COPROC[0]} var1 var2 var3
$ echo "$var1 $var2 $var3"

one two three

$ kill $COPROC_PID