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STICKY(7)	     BSD Miscellaneous Information Manual	     STICKY(7)

NAME
     sticky -- sticky text and append-only directories

DESCRIPTION
     A special file mode, called the sticky bit	(mode S_ISTXT),	is used	to in-
     dicate special treatment for directories.	It is ignored for regular
     files.  See chmod(2) or the file <sys/stat.h> for an explanation of file
     modes.

STICKY DIRECTORIES
     A directory whose `sticky bit' is set becomes an append-only directory,
     or, more accurately, a directory in which the deletion of files is	re-
     stricted.	A file in a sticky directory may only be removed or renamed by
     a user if the user	has write permission for the directory and the user is
     the owner of the file, the	owner of the directory,	or the super-user.
     This feature is usefully applied to directories such as /tmp which	must
     be	publicly writable but should deny users	the license to arbitrarily
     delete or rename each others' files.

     Any user may create a sticky directory.  See chmod(1) for details about
     modifying file modes.

HISTORY
     A sticky command appeared in Version 32V AT&T UNIX.

BUGS
     Neither open(2) nor mkdir(2) will create a	file with the sticky bit set.

BSD				 June 5, 1993				   BSD

NAME | DESCRIPTION | STICKY DIRECTORIES | HISTORY | BUGS

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