Plan 9 provides a generic framework for writing server-client programs based on the 9p message-oriented protocol; nothing more nothing less! In Linux, there is

Plan 9 provides a generic framework for writing server-client programs based on the 9p message-oriented protocol; nothing more nothing less! In Linux, there is no such widely generic equivalent. Every server-client application does that in its own way. Actually Plan 9 forces everybody providing a service to understand 9p and to be able to translate 9p message requests to whatever it means for that service (what does write(bytes) means for a printer? What does write(bytes) means for a screen? what does write(bytes) means for a GPU? Everyone of those should understand a 9p write() message and translate it to whatever service it means) then Plan 9 uses that power to forward requests over the network to remote servers, making easy to use resources in a distributed environment.