A customer has sent you a very large log set. You want to investigate the messages logs in the ./messages
folder in a log set for the last group change. If the cluster name is "Isilon-1", what command could be used
to search inside these logs for a search string "group"?
A. cat Isilon-1-* | grep -i group | tail
B. grep group Isilon-1-*
C. tail -1 Isilon-1-* | grep group
D. cat * | grep group