title: using double quotes in bash export statement
body: <p>Hello I'm reading a book about bash scripting and the author says to add the following to the end of my .bashrc file.  <code>export PATH=~/bin:"$PATH"</code> in order to execute my file from the command line by typing its name.  I notice however that if I put <code>export PATH=~/bin:$PATH</code> I can achieve the same result.  So my question is what is the difference between the one with quotes and the one without quotes?  thanks.</p>