Для openSUSE Tumbleweed запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/server:search/openSUSE_Tumbleweed/server:search.repo
zypper refresh
zypper install plocate
Для 15.5 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/server:search/15.5/server:search.repo
zypper refresh
zypper install plocate
Для 15.4 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/server:search/15.4/server:search.repo
zypper refresh
zypper install plocate