Thanks for all your input. Appreciated.

Incidentally, zonename produces either "global" or a zone name so not sure what all the scripting argument is all about. Maybe I lost the plot somewhere or other.

[ $(zonename) != "global" ] && [ $(uname -r) = "5.11" ] && echo "Solaris 11 zone, best not use iostat and vmstat."

Oracle are looking into why Solaris 11 zones go funny with iostat and vmstat.

Nick Dublin