Can you recall all possible methods of inter-process communication (IPC)?

Inter-process communication (IPC) refers to methods of exchanging data between different processes. In Go and generally in system programming, the following IPC methods are common:

• Channels — in Go, this is the primary way for goroutines to communicate, but other mechanisms are used for processes.
• Sockets — TCP/UDP sockets allow data exchange over a network or locally via Unix domain sockets.
• Named Pipes (FIFO) — files through which processes can exchange data streams.
• Shared Memory — allocating a memory area accessible by multiple processes.
• Semaphores and Mutexes — for synchronizing access to resources.
• Message Queues — message queues that allow sending and receiving structured messages.
• Signals — for notifying processes about events.
• Files — reading and writing from files as a means of data exchange.

In Go, for IPC between processes, sockets, named pipes, or shared memory via system calls are most commonly used. For goroutines within a process, channels and synchronization through the sync package.