FBTAB(5) BSD Reference 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 lo- gin 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 dev- ice 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 MirOS BSD #10-current August 22, 1994 1
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