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

     fbtab -- change device protection upon login

     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.,

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

     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.


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

     Guido van Rooij

BSD                            September 8, 2014                           BSD