3 printroot \- print the name of the root device on standard output
18 .FL "\-r" "Print only the root device, not a full mtab line"
20 .EX "printroot" "Print the name of the root device"
24 is useful for initializing the \fI/etc/mtab\fR when the system is booted.
25 It figures out what the root device is by searching \fI/dev\fR until it
26 finds a block special file with the right major/minor device numbers.