On Thursday, 17. January 2002 19:21, Carsten Ungewitter wrote:
[...] was ist ein suid-Bit und wie macht man das?? fragt völlig unwissend carsten Ganz kurz gesagt: Das Programm kann von einem anderen User mit den Rechten die eigendlich der Eigentümer hat ausgeführt werden.
Aber am besten wird das ganze durch "info chmod" <TAB> auf "*Note File permissions::" <TAB><TAB><TAB> auf "* Numeric Modes::" erklärt aus info chmod ---8<--- Numeric Modes ============= File permissions are stored internally as integers. As an alternative to giving a symbolic mode, you can give an octal (base 8) number that corresponds to the internal representation of the new mode. This number is always interpreted in octal; you do not have to add a leading 0, as you do in C. Mode 0055 is the same as mode 55. A numeric mode is usually shorter than the corresponding symbolic mode, but it is limited in that it can not take into account a file's previous permissions; it can only set them absolutely. On most systems, the permissions granted to the user, to other users in the file's group, and to other users not in the file's group are each stored as three bits, which are represented as one octal digit. The three special permissions are also each stored as one bit, and they are as a group represented as another octal digit. Here is how the bits are arranged, starting with the lowest valued bit: Value in Corresponding Mode Permission Other users not in the file's group: 1 Execute 2 Write 4 Read Other users in the file's group: 10 Execute 20 Write 40 Read The file's owner: 100 Execute 200 Write 400 Read Special permissions: 1000 Save text image on swap device 2000 Set group ID on execution 4000 Set user ID on execution For example, numeric mode 4755 corresponds to symbolic mode `u=rwxs,go=rx', and numeric mode 664 corresponds to symbolic mode `ug=rw,o=r'. Numeric mode 0 corresponds to symbolic mode `ugo ---8<--- Besser und prägnanter hab ich es noch nicht erklärt gefunden. Tschüss, Thomas -- We are Pentium of Borg. Division is futile. You will be approximated. (seen in someone's .signature)