Para openSUSE Tumbleweed execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:tools/openSUSE_Tumbleweed/devel:tools.repo
zypper refresh
zypper install txt2man
Para openSUSE Factory zSystems execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:tools/openSUSE_Factory_zSystems/devel:tools.repo
zypper refresh
zypper install txt2man
Para openSUSE Factory PowerPC execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:tools/openSUSE_Factory_PowerPC/devel:tools.repo
zypper refresh
zypper install txt2man
Para openSUSE Factory ARM execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:tools/openSUSE_Factory_ARM/devel:tools.repo
zypper refresh
zypper install txt2man
Para 15.6 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:tools/15.6/devel:tools.repo
zypper refresh
zypper install txt2man
Para 15.5 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:tools/15.5/devel:tools.repo
zypper refresh
zypper install txt2man