#! /bin/bash -f

# Thu, 23 Nov 2006 13:43:27 -0500

# An array containing a list of all machines the user has
# account on. Password-less SSH access must be set up 
# between the client machine and these hosts.
export MACHINES="host1.domain1
                 host2.domain1 \
                 host3.domain1 \
                 host1.domain2 \
                 host2.domain2 \
                 host3.domain2 \
"

export j=1

for i in $MACHINES
  do 
  export CONFIRM=`ping -c 1 $i | grep "packet loss"`
  export TRANSMT=`echo $CONFIRM | awk -F ' ' '{print $1}'`
  export RECEIPT=`echo $CONFIRM | awk -F ' ' '{print $4}'`
  /usr/bin/ssh $i 'who | grep $USER' > /dev/null

  if [ "$TRANSMT" == "$RECEIPT" ];
  then

    if [ $? = 0 ]
     then
      echo "$j. $i :"
      echo "   Logged in"
      echo
    else
      echo "$j. $i :"
      echo "   Not logged in yet"
      echo
    fi

  export j=`expr $j + 1`
  fi

done