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STICKY(8)		FreeBSD	System Manager's Manual		     STICKY(8)

NAME
     sticky -- sticky text and append-only directories

DESCRIPTION
     A special file mode, called the sticky bit	(mode S_ISVTX),	is used	to
     indicate special treatment	for directories.  It is	ignored	for regular
     files.  See chmod(2) or the file /usr/include/sys/stat.h for an explana-
     tion 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
     restricted.  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.

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

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

FreeBSD	10.1			 June 5, 1993			  FreeBSD 10.1

NAME | DESCRIPTION | STICKY DIRECTORIES | BUGS | HISTORY

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