NAME
fbtab —
    change device protection upon
    login
DESCRIPTION
Thefbtab file contains a number of lines specifying a
  device together with a list of devices with associated protections. 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: a
    login device (/dev/ttyv0), an octal permission
    number (0600), and a colon (‘:’)
    delimited list of device patterns (/dev/console,
    /dev/dsp*). All device patterns are absolute
  paths.
If the tty argument (relative path) matches a login device name (absolute path), the permissions of the devices in the colon-delimited list are set as specified in the second field, and their ownership is changed to that of the UID and GID arguments.
FILES
- /etc/fbtab
 - The 
fbtabfile resides in /etc. 
SEE ALSO
AUTHORS
Guido van Rooij