| List process. |
uptime | View the system uptime and CPU load. |
w | |
top | Monitor resource-intensive processes interactively. |
A process is a unit of work in OS X. Each program you run represents one or more processes, and OS X provides commands for viewing and manipulating them. Every process is identified by a numeric process ID, or PID. If your Mac seems unusually slow, the commands in this section can help identify the cause.
Processes are different from jobs (see Shell Job Control): processes are part of the operating system, whereas jobs are higher-level constructs known only to the shell in which they’re running. A running program comprises one or more processes; a job consists of one or more programs executed as a shell command.
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