Resuming processes and apps with killall is a matter of changing the flag from -STOP to -CONT, everything else is the same:įor example, to resume the application with a long name:Īgain, the app/process will continue to function as usual, and CPU usage will return to where it was before being paused.Īpps or processes with no spaces in their name can be impacted directly by killall without any additional flags or indicators, like iTunes.Click here to directly go to the complete apple resume sample.Īpple is an esteemed organization that fascinates numerous individuals to join it as a part of scaling their career. Or you can just target the process with a specific app name like so: Not sure what the app name is? Use ps and grep:įor example, you could grep for “Chrome” to find all processes with “Chrome” in the name: The basic halt command with killall is as follows: This can be easier for apps that are simple to identify by a name, but it has limitations when it comes to working with processes with complex names, or for pausing a specific process that has duplicate processes with the same name (like a specific Chrome tab or window mixed in with many “Google Chrome Renderer” processes), and thus we covered the PID approach first because it’s much more direct. If you know the application or exact process name, you can also use the ‘killall’ command with the -STOP flag to halt processes.
Stopping & Continuing Applications by App Name Nonethless, let’s demonstrate this with killall too.
Using -STOP and -CONT with killall is essentially the same, but it has some limitations regarding names, and thus we covered the more direct method of using kill based on PID instead. The screenshot below demonstrates this trick using both the kill and killall commands: Along with this comes a return to whatever level of CPU consumption existed earlier. Resuming a stopped or paused application is simple, just change the kill command slightly and use the same process ID that you retrieved from the previous steps:įor example, to resume the iTunes app using the PID from earlier:Īnd now iTunes becomes usable again, minus the spinning wait cursor.
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How to Resume a “Stopped” Application or Process Thus, if you want to use the app again, you must “resume” it. Note that trying to use an application that has been paused will almost always result in seeing the spinning beach ball of death, minus the CPU usage. Whether you use Activity Monitor or ps to retrieve the PID is irrelevant, so long as you enter the correct process ID when using the kill command. Those with more command line knowledge may prefer to use ps rather than Activity Monitor, which is really quite easy:Ĭhange “Name” to whatever the start of a process or application name is, locate the PID, and then put that into the kill command: The process has literally been stopped in its tracks: You will find the effect of stopping a process on CPU usage is dramatic, this screen shot demonstrates iTunes consuming 70% CPU while running it’s Visualizer, and the same iTunes process after it has been halted with the -STOP flag.
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The PID is always a number, and every single process running on a Mac has an associated ID. The basic syntax for suspending an application is as follows, where PID is the ID of the process you wish to pause:
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How to Temporarily Suspend Stop a Process or App in Mac OS X Before beginning, launch the Terminal app, found in /Applications/Utilities/, and also launch Activity Monitor, which is in the same folder.
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