unable to run pig on local ubuntu

Hi,

Please help me. I am not able to run pig in my desktop

hadoop [ at ] hadoop-desktop:~$ cd work
hadoop [ at ] hadoop-desktop:~/work$ cd pig-0.12.0/
hadoop [ at ] hadoop-desktop:~/work/pig-0.12.0$ cd bin/
hadoop [ at ] hadoop-desktop:~/work/pig-0.12.0/bin$ pig -x local
bash: /home/hadoop/work/pig-0.12.0/bin/pig: Permission denied
hadoop [ at ] hadoop-desktop:~/work/pig-0.12.0/bin$

my .bashrc file

export HADOOP_HOME="/home/hadoop/
work/hadoop-1.2.1"

#set JAVA_HOME(we will also configure JAVA_HOME directly for hadoop later
on)
export JAVA_HOME="/usr/lib/jvm/java-7-openjdk-i386"

#add hadoop bin/ directory to PATH
export PATH=$PATH:$HADOOP_HOME/bin:$JAVA_HOME/bin

# PIG binary paths
export PIG_HOME=/home/hadoop/work/pig-0.12.0
export PATH=$PATH:$PIG_HOME/bin