An instance of a running program is referred to as a process.
Every time you run a shell command, a program is run and a process is
created for it. Each process in Linux has a process id (PID) and is
associated with a particular user account and group account.
Linux is a multitasking operating system, which means that a multiple programs can be running at the same time (processes are sometimes called tasks). Each process has the illusion that it is the only process on the computer. The tasks share common processing resources (like CPU and memory).
To be a good Linux administrator, you need to be familiar with a wide range of commands that enable you to list, identify or delete a process. In the next sections we will describe some of these commands.
Linux is a multitasking operating system, which means that a multiple programs can be running at the same time (processes are sometimes called tasks). Each process has the illusion that it is the only process on the computer. The tasks share common processing resources (like CPU and memory).
To be a good Linux administrator, you need to be familiar with a wide range of commands that enable you to list, identify or delete a process. In the next sections we will describe some of these commands.
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