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Old 03-09-2011, 08:16 PM   #1
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Registered: Feb 2011
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mpich2\mpd & output

hi there,

when we type mpd & to bring up ring on a single node
the output is a random number,like this:
>>mpd &
>>[1] 5450

anybody knows what is this resulting number?

ps: i dont think its a port number because when i type
>>mpd -e
its prints out the port number mpd takes

Old 03-09-2011, 08:39 PM   #2
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Registered: Apr 2005
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This "number" is the PID of the mpd process. PID stands for process identification number, it is used to give the process a PID in which is known to the system. The reason why it comes up like that is because when you append the & after any command, it sends the process to the background of the terminal, in which the program being ran because a child process of the terminal.



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