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: The first form brings the system down in number minutes and the second at the absolute time specified.Īny other arguments comprise the warning message that is broadcast to users currently logged into the system.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. Time is the time at which shutdown will bring the system down and may be the word now (indicating an immediate shutdown) or specify a future time in one of two formats: +number, or yymmddhhmm, where the year, month, and day may be defaulted to the current system values. OS X uses this mode automatically with supported UPSs in emergency shutdowns. The system is halted up until the point of removing system power, but waits before removing power for 5 minutes so that an external UPS (uninterruptible power supply) can forcibly remove power.This simulates a dirty shutdown to permit a later automatic power on. The system is put to sleep at the specified time. The system is rebooted at the specified time. If -h or -r is specified, shutdown will execute halt(8) or reboot(8) instead of sending a signal to launch(8). If the -o is specified, prevent the file system cache from being flushed by passing -n option to halt(8) or reboot(8).This option should probably not be used. Kick everybody off.The -k option does not actually halt the system, but leaves the system multi-user with logins disabled (for all but super-users). The system is halted at the specified time.
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