ipc-key

The server uses a shared-memory pool for interprocess communcation between the main process and its child processes (unless your system doesn't have System V IPC).

Normally you shouldn't need to change this value because it just needs to be some random identifier to differentiate itself from other IPC elements.  In the incredibly small chance your system already uses the default value (0x77C0FFEE), you can change it to any other unique hexidecimal number.

Examples:

Recommendation:
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