#!/bin/bash
# huntuser
#Looking for a particular user to log on
if  ((  $#  ==  1  ))
then
        until who |  grep   "^$1" > /dev/null
        do
                sleep  10
                echo -n .
        done
        echo "  $1  has logged on..."
else
echo " This script needs a valid login user as an argument. "
fi