Kas protsess võib omada teavet teise protsessi tegevuste kohta süsteemis?

In general, one process cannot directly obtain information about the actions of another process due to process isolation in the operating system.

However, there are ways to exchange information between processes (IPC — inter-process communication), for example:

• Using shared resources (files, databases).
• Sockets or channels (pipes).
• Signals or special system calls.

In Node.js, message exchange between processes can be implemented via child_process or worker_threads.

If processes are not explicitly connected, one process does not have access to the internal state of another, except through system monitoring tools (e.g., reading logs, using OS API to gather statistics).

Therefore, for one process to know about the actions of another, it is necessary to specifically organize data exchange or use OS mechanisms.