a unique identifier for the process in the system
a unique number that identifies a process, with that you can kill or terminate a running program on your server (see kill command)
a number that uniquely identifies each running process on your computer. In Windows these numbers are unique only for the duration of the process, i.e. after a process terminates, its process ID may be reassigned to a new process.
A unique number assigned to a process by the operating system. The number is used internally by processes to communicate.
A number that uniquely identifies a running program on the UNIX system. This is also known as the PID.
A unique number that identifies a running process. This number is used when you want to take some action on the process.
UNIX assigns every process an ID number (called a PID) when it starts. See also article 38.3. This number allows you to refer to a process at a later time. If you need to kill ( 38.10) a runaway program, you refer to it by its process ID. The ps ( 38.5) command displays process IDs.
A number associated with a process, which can be used to uniquely identify the process.
A unique identification number assigned to all processes by the operating system. Also see PID.
a unique number that identifies a process running on a computer, see process name.