To show the current folder name type pwd.The current directory (the “working directory”) when you open Terminal always defaults to your Home Folder.īefore we describe how to check and terminate a process on your computer it’s worth knowing a few basic Terminal commands. The command prompt always begins with your computer name followed by your local Account Name. The second line is the command prompt which is where you enter the commands you wish to execute. The first line shows the date and time when you last logged in. Once it opens you’ll be presented with a standard Terminal window as below. Terminal is always represented by the icon below. The first step is to open Terminal either from the Applications -> Utilities folder or simply type Terminal into Spotlight. The Activity Monitor Application How to Use Terminal Note that process ID’s are assigned by Mac OS, and therefore will not be the same on your computer as somebody else’s. The Apple Mail application is displayed in Activity Monitor with a PID number of 14649. From here you can inspect or quit each process, but in this example we use Activity Monitor simply as a companion to Terminal. The main Activity Monitor window is shown below.Įach application on your Mac has an associated Process ID (a PID) and a user-friendly name. When used together, Activity Monitor and Terminal provide a powerful yet relatively straightforward way to inspect and manage wayward processes. Activity Monitor shows common process-related details such as the memory used and percentage of CPU that each process is consuming. the command or application file path About Activity MonitorĪ related indispensable application is Activity Monitor – a graphical tool that allows you to manage processes, however it doesn’t have quite the same capabilities that Terminal does.Terminal is a text-based tool which lets you conduct all manner of routine tasks such as viewing directories, copying, moving and deleting files, as well as obtain detailed information about each process running including: On other systems it is likely to be init, although some Linux distributions use alternatives such as OpenRc or s6.Probably the most useful tool to check and kill processes is called Terminal, which is an application that provides access to the lower levels of the Mac OS X operating system and files. On systemd-based systems that'll be systemd. The process with a PID of 1 is the first process that is launched when Linux is launched by the boot-up processes. Once that figure is reached, Linux goes back to the start and looks for a PID that has become free because the process that previously owned it has terminated. That carries on until the system hits the maximum value for a PID. So the process with the highest PID is the newest - that is, most recently - launched process. A newly-started process will receive a PID one higher than the last PID that was issued. Every running application, utility, and daemon has a PID. Internally, Linux keeps track of its running process by allocating them a unique ID number, called the process ID, or PID. Here are two ways to find out what it is. It's a unique number given to each piece of running software. Working with a Linux process often means knowing its process ID, or PID.
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