user323: The file bitcoind.pid is mentioned on "Running Bitcoin" wiki page, but it's not explained on the wiki. What does that file do?

user958: Isn't it the file containing (the current running instance of) bitcoin's pid,
http://en.wikipedia.org/wiki/Process_identifier#Pidfile?

323: <p>The file bitcoind.pid is mentioned on <a href="https://en.bitcoin.it/wiki/Running_Bitcoin" rel="nofollow">"Running Bitcoin" wiki page</a>, but it's not explained on the wiki. What does that file do?</p>
 958: <p>Isn't it the file containing (the current running instance of) bitcoin's pid,</p>
<a href="http://en.wikipedia.org/wiki/Process_identifier#Pidfile" rel="noreferrer">http://en.wikipedia.org/wiki/Process_identifier#Pidfile</a>?</p>
