Possible Duplicate:what does the @ mean in ls -l? What does the @ sign mean in the following ls output?-rw-r--r--@ 1 root wheel 489 Jan 4 13:14 boot.plist
What does @ sign mean in 'ls' output on Mac OSX Lion terminal?
linux;command line;terminal;osx;ls
the @ indicates an extended permissions set.  The -e option will display the extended attributes.