Parse information from /proc/cpuinfo to help check if HT is enabled

htcheck.sh

#!/bin/sh
CPUFILE=/proc/cpuinfo
test -f $CPUFILE || exit 1
NUMPHY=`grep "physical id" $CPUFILE | sort -u | wc -l`
NUMLOG=`grep "processor" $CPUFILE | wc -l`
if [ $NUMPHY -eq 1 ]
  then
    echo This system has one physical CPU,
  else
    echo This system has $NUMPHY physical CPUs,
fi
if [ $NUMLOG -gt 1 ]
  then
    echo and $NUMLOG logical CPUs.
    NUMCORE=`grep "core id" $CPUFILE | sort -u | wc -l`
    if [ $NUMCORE -gt 1 ]
      then
        echo For every physical CPU there are $NUMCORE cores.
    fi
  else
    echo and one logical CPU.
fi
echo -n The CPU is a `grep "model name" $CPUFILE | sort -u | cut -d : -f 2-`
echo " with`grep "cache size" $CPUFILE | sort -u | cut -d : -f 2-` cache"

This was fetched from
http://unix.stackexchange.com/questions/33450/checking-if-hyperthreading-is-enabled-or-not/33509#33509