End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Process::Status#pid

stat.pid → integer

static VALUE
pst_pid_m(VALUE self)
{
    rb_pid_t pid = pst_pid(self);
    return PIDT2NUM(pid);
}

Returns the process ID that this status object represents.

Example

fork { exit }   #=> 26569
Process.wait    #=> 26569
$?.pid          #=> 26569

See also #inspect #signaled? #exitstatus #stopped? also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0