http://en.wikipedia.org/wiki/Posix
posix shell IEEE Working Group 1003.2
$ ln -fs /etc/profile /tmp/link $ ls -l /tmp/link lrwxrwxrwx 1 rzr rzr 12 May 29 21:27 /tmp/link -> /etc/profile $ su root -c "chown -v root.staff /tmp/link" Password: changed ownership of `/tmp/link' to root:staff $ ls -l /tmp/link lrwxrwxrwx 1 rzr rzr 12 May 29 21:27 /tmp/link -> /etc/profile $ su root -c "chown -h -v root.staff /tmp/link" lrwxrwxrwx 1 root staff 12 May 29 21:27 /tmp/link -> /etc/profile