* Show kernel version on hosts:

I wanted to verify that the correct kernel version was running on each of
=host1=, =host2=, =host3=, and =host4=.  I ran the following on each:

#+BEGIN_SRC sh :exports code :eval no
uname -a
#+END_SRC

On =host1=:

#+BEGIN_SRC sh :dir /host1: :exports results :results output
uname -a
#+END_SRC

On =host2=:

#+BEGIN_SRC sh :dir /host2: :exports results :results output
uname -a
#+END_SRC

On =host3=:

#+BEGIN_SRC sh :dir /host3: :exports results :results output
uname -a
#+END_SRC

On =host4=:

#+BEGIN_SRC sh :dir /host4: :exports results :results output
uname -a
#+END_SRC