Thanks John for the info... I did that and now I'm missing a file.
I tried to ask yum what package I need - but It did not know.
Building native extensions. This could take a while...
ERROR: Failed to build gem native extension.
/opt/rh/rh-ruby22/root/usr/bin/ruby -r
./siteconf20190805-94063-1gebs0u.rb extconf.rb
mkmf.rb can't find header files for ruby at
/opt/rh/rh-ruby22/root/usr/share/include/ruby.h
extconf failed, exit code 1
Gem files will remain installed in
/opt/rh/rh-ruby22/root/usr/local/share/gems/gems/nio4r-1.1.1 for inspection.
Results logged to
/opt/rh/rh-ruby22/root/usr/local/lib64/gems/ruby/nio4r-1.1.1/gem_make.out
yum provides /opt/rh/rh-ruby22/root/usr/share/include/ruby.h
Loaded plugins: fastestmirror, langpacks, nvidia
Loading mirror speeds from cached hostfile
* base: mirror.tzulo.com
* centos-sclo-rh: mirror.team-cymru.com
* centos-sclo-sclo: mirror.fileplanet.com
* elrepo: ord.mirror.rackspace.com
* epel: ord.mirror.rackspace.com
* extras: mirror.nodesdirect.com
* updates: mirrors.liquidweb.com
centos-sclo-rh/x86_64/filelists_db
| 12 MB 00:00:01
elrepo/filelists_db
| 34 kB 00:00:00
epel/x86_64/filelists_db
| 12 MB 00:00:00
google-chrome/filelists
| 1.7 kB 00:00:00
updates/7/x86_64/filelists_db
| 5.2 MB 00:00:00
No matches found
Thanks, What is next ?
Jerry
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