GNOME System Monitor is a GNOME process viewer and system monitor with
an attractive, easy-to-use interface, It has features, such as a tree
view for process dependencies, icons for processes, the ability to hide
processes that you don't want to see, graphical time histories of
CPU/memory/swap usage, the ability to kill/renice processes needing root
access, as well as the standard features that you might expect from a
Swap out openSUSE_Leap_15.5 for openSUSE_Leap_15.4 or openSUSE_Tumbleweed if you’re using a different version of openSUSE.
With the repository added, import its GPG key:
sudo zypper --gpg-auto-import-keys refresh
Finally, upgrade the package cache to include the new snappy repository:
sudo zypper dup --from snappy
Snap can now be installed with the following:
sudo zypper install snapd
You then need to either reboot, logout/login or source /etc/profile to have /snap/bin added to PATH.
Additionally, enable and start both the snapd and the snapd.apparmor services with the following commands: