Access permissions chmod 606

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Old 09-03-2013
This is an example of what RudiC mentioned:
 ls -ld tmp
drwxrwxrwt   8 root     sys         2808 Sep  3 15:00 tmp

Only the owner of a file can delete the file. To prevent access create a director like tmp above one level below a directory

drwxr-x---   8 root     somegroup         2808 Sep  3 15:00 /somedir

You then have a directory hierarchy of /somedir/tmp, where only users in somegroup can access tmp.

Last edited by jim mcnamara; 09-03-2013 at 07:27 PM..
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sticky(5)						Standards, Environments, and Macros						 sticky(5)

sticky - mark files for special treatment DESCRIPTION
The sticky bit (file mode bit 01000, see chmod(2)) is used to indicate special treatment of certain files and directories. A directory for which the sticky bit is set restricts deletion of files it contains. A file in a sticky directory can only be removed or renamed by a user who has write permission on the directory, and either owns the file, owns the directory, has write permission on the file, or is a privi- leged user. Setting the sticky bit is useful for directories such as /tmp, which must be publicly writable but should deny users permission to arbitrarily delete or rename the files of others. If the sticky bit is set on a regular file and no execute bits are set, the system's page cache will not be used to hold the file's data. This bit is normally set on swap files of diskless clients so that accesses to these files do not flush more valuable data from the sys- tem's cache. Moreover, by default such files are treated as swap files, whose inode modification times may not necessarily be correctly recorded on permanent storage. Any user may create a sticky directory. See chmod for details about modifying file modes. SEE ALSO
chmod(1), chmod(2), chown(2), mkdir(2), rename(2), unlink(2) BUGS
The mkdir(2) function will not create a directory with the sticky bit set. SunOS 5.11 1 Aug 2002 sticky(5)