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What is a PID number?

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Old Unix and Linux 04-17-2011   -   Original Discussion by nariangel
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What is a PID number?

What is a PID number?
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Old Unix and Linux 04-17-2011   -   Original Discussion by nariangel
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Each time a process is created it gets its own unique number to refer to it by. That's a Process ID, or "PID" for short.
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Old Unix and Linux 04-17-2011   -   Original Discussion by nariangel
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Thank you!!.
And Why are these numbers useful when you run processes in the background?
Please?
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Old Unix and Linux 04-17-2011   -   Original Discussion by nariangel
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So you know which jobs are running in the background, should you need to do something with them.

This sounds like homework. If it is, please post it in the appropriate forum.
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