.\" this is comment .Dd August 22, 1994 .Dt FBTAB 5 .Os .Sh NAME .Nm fbtab .Nd change device protection upon login .Sh DESCRIPTION The .Nm fbtab file contains lines which specify how the permissions and ownership of various system files should be changed based on the user's login device name. .Pp Comments start with a # and extend to the end of the line. Blank lines or lines with only a comment are ignored. .Pp All other lines consist of three fields delimited by whitespace. .Bl -tag -width xxxxxxxxxxxxxxxxxxxx .It Login Device The device you have logged in on, ie. /dev/ttyv0. .It File Permission An octal permission number (0600), as used by .Xr chmod 2 . .It Other devices The final field is a ":"-delimited list of devices, ie. /dev/console:/dev/fd0a. All device names are absolute paths. A path that ends in "/*" refers to all directory entries except "." and "..". .El .Pp The .Nm fbtab file is used by .Xr login 1 to .Xr chown 2 the specified files to the user who has performed a login. As well, .Xr chmod 2 is used to set the devices to the specified permission. When a user logs out, .Xr init 8 is responsible for performing the inverse operation, this results in the files once again belonging to root. .Sh FILES .Bl -tag -width /etc/fbtab -compact .It Pa /etc/fbtab The .Nm fbtab file resides in .Pa /etc . .El .Sh SEE ALSO .Xr login 1 , .Xr init 8 .Sh AUTHOR Guido van Rooij