Для openSUSE Tumbleweed запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/X11:common:Factory/openSUSE_Tumbleweed/X11:common:Factory.repo
zypper refresh
zypper install numix-icon-theme-circle
Для openSUSE Factory ARM запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/X11:common:Factory/openSUSE_Factory_ARM/X11:common:Factory.repo
zypper refresh
zypper install numix-icon-theme-circle
Для 16.0 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/X11:common:Factory/16.0/X11:common:Factory.repo
zypper refresh
zypper install numix-icon-theme-circle
Для 15.7 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/X11:common:Factory/15.7/X11:common:Factory.repo
zypper refresh
zypper install numix-icon-theme-circle
Для 15.6 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/X11:common:Factory/15.6/X11:common:Factory.repo
zypper refresh
zypper install numix-icon-theme-circle
Для 15.5 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/X11:common:Factory/15.5/X11:common:Factory.repo
zypper refresh
zypper install numix-icon-theme-circle