title: how to get description of error in unix
body: <p>Hello Friend I have a unix script, which moves files from one folder to another folder with changed name. File size is very large.</p>
  
  <p>I have put the echo "Return code :" $0 to get the result code of file mv command. This will return either 1 or 0.
  I am getting 1 for particular file, which is very large. Can you suggest how do i get the description of the error?
  Thanks
  Deepak</p>