System.pid

You're seeing just the function pid, go back to System module for more information.

Specs

pid() :: String.t()

Returns the operating system PID for the current Erlang runtime system instance.

Returns a string containing the (usually) numerical identifier for a process. On Unix-like operating systems, this is typically the return value of the getpid() system call. On Windows, the process ID as returned by the GetCurrentProcessId() system call is used.

Examples

System.pid()