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The yum repo for SCL is SLAC RHEL6 Server Software Collections (slac-rhel-x86_64-server-6-rhscl-1). These are installed on public login hosts, if you do not have sudo on a host where it is needed, please send an email to unix-admin@slac.stanford.edu.
For Red Hat Developer Toolset Product Life Cycle please see: https://access.redhat.com/support/policy/updates/dts/
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gcc (GCC) 4.9.2 20150212 (Red Hat 4.9.2-6)
bash-4.1$ exit
The Red Hat Developer Toolset (DTS) is intended to give developers access to updated compilers and tools for C and C++ development.
This fast-moving product will update frequently and will have a much shorter product life cycle and support term than Red Hat Enterprise Linux.
See https://access.redhat.com/support/policy/updates/dts/ for details.