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FBTAB(5)                    BSD File Formats Manual                   FBTAB(5)

NAME
     fbtab -- change device protection upon login

DESCRIPTION
     The fbtab file contains lines which specify how the permissions and own-
     ership of various system files should be changed based on the user's
     login device name.

     Comments start with a '#' and extend to the end of the line.  Blank lines
     or lines with only a comment are ignored.

     All other lines consist of three fields delimited by whitespace.

     Login Device          The device you have logged in on (e.g.,
                           ``/dev/ttyv0'').

     File Permission       An octal permission number (0600), as used by
                           chmod(2).

     Other devices         The final field is a colon (':') delimited list of
                           devices (e.g., ``/dev/console:/dev/fd0a'').  All
                           device names are absolute paths.  A path that ends
                           in ``/*'' refers to all directory entries except
                           ``.'' and ``..''.

     The fbtab file is used by login(1) to chown(2) the specified files to the
     user who has performed a login.  Additionally, chmod(2) is used to set
     the devices to the specified permission.  When a user logs out, init(8)
     is responsible for performing the inverse operation, which results in the
     files once again belonging to root.

FILES
     /etc/fbtab

SEE ALSO
     login(1), login_fbtab(3), init(8)

AUTHORS
     Guido van Rooij

BSD                              May 29, 2017                              BSD