Compare directories

sudo apt-get install dirdiff
dirdiff -r -q  /directory1  /directory2

Options:
  -b        ignore trailing blanks
  -B        include comparison of binary files
  -c        ignore trailing carriage returns
  -e file   exclude file from comparison
  -E dir    exclude subdirectory from comparison
  -l        list filenames only
  -q        quiet mode (only list filename if there are differences)
  -r        recursive mode (descend all subdirectories)
  -L        show contents of files that only exist in leftdir
  -R        show contents of files that only exist in rightdir
  -T        ignore files that are text in one directory
  -X        ignore files that only exist in one directory