Is there a way to REPLACE System Monitor in Right Click menu?

General Help
1

If there is a reasonably simple way to do the following, any help would be appreciated.

I am not personally partial to the built in "System Monitor" and prefer to use "Mission Center", and am aware that there are alternates that others may prefer.

My inquiry is that since I prefer to "Right Click" on the taskbar to access this, is there a simple way that I could replace "System Monitor" in the right click menu with my preference rather than having to access menus or adding another icon to desktop or taskbar?

Thanks in advance!

2

Please see Here as another user has beat you to the punch:

sudo nano /usr/share/gnome-shell/extensions/zorin-taskbar@zorinos.com/appIcons.js

replace gnome-system-monitor with the command to launch Mission Center.

You may want to get it in the App Menu, too:

sudo nano /usr/share/gnome-shell/extensions/zorin-menu@zorinos.com/secondaryMenu.js

1 Like
3

Awesome, Thank You!

1 Like
4

@Aravisian

Attempted this solution to no avail. I initially attempted to replace just the command as suggested, however, upon doing so, the menu option for System Monitor disappeared all together. After returning the command to the original, it reappeared in the menu list again. Added an additional menu item just for Mission Center, but it still doesn't show up....

Here is the current script with System Monitor working, and Mission Center not

this._appendItem({
  title: _('System Monitor'),
  cmd: ['gnome-system-monitor'],
})

this._appendItem({
  title: _('Mission Center'),
  cmd: ['flatpak run io.missioncenter.MissionCenter'],
})
5

I think cmd is trying to run that (Which, I would have put the same thing you did, just so you know) as one command, including the white space.
Let's try breaking it apart:

this._appendItem({
  title: _('Mission Center'),
  cmd: ['flatpak', 'run', 'io.missioncenter.MissionCenter'],
})
5 Likes
6

That did the trick, thanks again!

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7

Bildschirmfoto vom 2026-07-23 10-34-41
Bildschirmfoto vom 2026-07-23 10-34-411286×880 61 KB

Tried to get it work, but did anywhere a mistake?
After editing the appIcons.js as you can see on the photo did a reboot, but afterwards with right click on the taskbar still appears only the "Systemmonitor", the mission center is not visible.

The mission center was installed over flatbak within the software store.
Thanks for any idea!

8

That looks right for me. And you have saved the file and you use Zorin taskbar? Or do you have replaced Zorin taskbar with dash to panel?

Does the MissionCenter work when you launch it from terminal with

flatpak run io.missioncenter.MissionCenter

When I tested it yesterday with the splitted flatpak command, it worked for me, but I had replaced the gnome-system-monitor with the Mission center and not added it. But actually, that should make no difference, I think.

9

Thanks for your fast answer.

Yes, did save the file appIcons.js and verified now again looking into it's changed content. It is saved as seen on the photo.
I use the Zorin taskbar below but additional the Gnome bar above.

First I had the appIcons.js changed overwriting the System Monitor with Mission Center entries, but did not work either. But I will try that again.

flatpak run io.missioncenter.MissionCenter
opens the mission center.

10

After editing the file appIcons.js again and deleted the System Monitor section it works now after reboot:

  • right click on the taskbar shows the Mission Center within Context menu
  • right click on the Zorin Start Button shows the System Monitor within Context menu

Thanks for your help!

1 Like