Shell Programming and Scripting

#!/bin/ksh

. /usr/sample/etc/unixadm.env  #Get host list variables

function printusage {
  echo "Usage: checkhosts.ksh [npsu] -c command"
  echo "       n:  AIX non-production"
  echo "       p:  AIX production"
  echo "       s:  SUN production"
  echo "       u:  SUN non-production"
}

while getopts ":npsuc:" opt
do
        case $opt in
        c) cOmmand="$OPTARG" ;;
        n) HOSTS=$AIXNP ;;
        p) HOSTS="$AIXPROD $HOSTS" ;;
        s) HOSTS="$SUNPROD $HOSTS" ;;
        u) HOSTS="$HOSTS $SUNNP" ;;
        ?) printusage
                exit 1;;
        esac
done
if [[ -z $cOmmand || -z $HOSTS ]]; then  #Check to make sure that there are hosts and a command to use
  printusage
  exit 2
fi

if ! echo $cOmmand | grep [a-zA-Z]; then  #Another validity test
  echo "invalid command: $cOmmand"
  printusage
  exit 2
fi

for i in $HOSTS; do
  echo "===== $i ====="
  if echo $i | grep -qiE "dev|qa|test"; then
    i=$i.qadomain.com
  fi
  rsh $i $cOmmand
done

./checkhosts.ksh -nc "lssrc -s net-snmp"