In linux, what does the process contain numbers?

Source: Internet
Author: User
In linux, what does the process contain numbers? -- Linux general technology-Linux technology and application information. for details, refer to the following section. Help you! In linux, the related processes are displayed with numbers. what do they represent? What if I only want to retrieve a process ??
Example:

$ Ps-ef | grep sdf
Sdu 29812 62686 2 Sep 18-764: 47 sdf 0 3
Sdu 40472 62686 2 Sep 18-766: 31 sdf 0 0
Sdu 51234 62686 2 Sep 18-763: 29 sdf 0 2
Sdu 62096 62686 2 Sep 18-765: 29 sdf 0 1

However, I only need to find out how to write the sdf 0 3 process.

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