нет
It's short for "co-process" which means a second process cooperating with
the shell. It's very similar to a background job started with an "&" at
the end of the command, except that instead of sharing the same standard
input and output as its parent shell, its standard I/O is connected to
the parent shell by a special kind of pipe called a FIFO (first in, first
out). This allows the parent shell to communicate with the coproc.
А различия в настройках дева, теста и прода должны быть косметическими
Если конечно, нет желания ловить баги отдельно во всех трех средах отдельно