UNIX Dateizugriffsrechte
This article is divided into two parts: The first part (Basic file access permissions) is a very short introduction to the basic file permission concept under Unix. The second part (T-bit, SUID and SGID) covers more advanced features of Linux that go beyond the basic "read-write-execute" flags.
Ein paar Tips
Well...here are some notes, tricks, some of these are specific to non-english speaking users and therefore not frequently answered in the common documentation.