so the first i put in this comes up:
Last login: Sun Feb 10 21:21:04 on ttys000
localhost:~ helgefelgendreher$ dirname /Applications/Arduino.app
localhost:~ helgefelgendreher$
2nd:
Last login: Sun Feb 10 21:25:20 on ttys000
localhost:~ helgefelgendreher$ ls -l@ /usr/bin/dirname
-r-xr-xr-x@ 1 root wheel 0 18 Mai 2009 /usr/bin/dirname
com.apple.ResourceFork 6776
com.apple.decmpfs 16
localhost:~ helgefelgendreher$
3rd:
Last login: Sun Feb 10 21:26:32 on ttys000
localhost:~ helgefelgendreher$ xattr /usr/bin/dirname
localhost:~ helgefelgendreher$
I can not say how much i appreciate your help