#!/bin/bash                                                                     
var=$(readlink -f $0)                                                           
echo $var                                                                       
	   
# ${BASH_SOURCE[0]}                                                                     
var=$(realpath $0)                                                              
echo $var                                                                       
	                                                                        
pushd `dirname $0` > /dev/null                                                  
var=$(pwd)/$(basename $0)                                                       
popd > /dev/null                                                                
echo $var