#!/bin/bash
for PATHS in 2 4 6 8
do
   STPATHS=${PATHS}
   COUNTER="1"
   
   for LUN in $(esxcfg-mpath -l | grep "has ${STPATHS} paths" | awk '{print $2}')
   do
      esxcfg-mpath --lun=${LUN} --path=$(esxcfg-mpath -q --lun=${LUN} | grep FC | awk '{print $4}' | awk '{print NR "S\t " $0}' | grep ${COUNTER}S | awk '{print $2}') --preferred
      COUNT=`expr ${COUNTER} + 1`
      COUNTER=${COUNT}
      if [[ ${COUNTER} -gt ${STPATHS} ]]
      then
         COUNTER="1"
      fi
   done
done