4.3BSD-UWisc/man/man5/rmtab.5

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.\" @(#)rmtab.5 1.1 85/12/28 SMI;
.TH RMTAB 5 "1 February 1985"
.SH NAME
rmtab \- remotely mounted file system table
.SH DESCRIPTION
.IX  "rmtab file"  ""  "\fLrmtab\fP \(em remote mounted file system table"
.I Rmtab
resides in directory
.I /etc
and contains a record of all clients
that have done remote mounts of file systems from this machine.
Whenever a remote
.I mount
is done, an entry is made in the
.I rmtab
file of the machine serving up that file system.
.I Umount
removes entries, if of a remotely mounted file system.
.I "Umount \-a"
broadcasts to all servers, and informs them that they should remove
all entries from
.I rmtab
created by the sender of the broadcast message.
By placing a
.I "umount \-a"
command in
.IR /etc/rc.boot ,
.I rmtab
tables can be purged of entries made by a crashed host,
which upon rebooting did not remount the same file systems it had before.
The table is a series of lines of the form
.IP
 hostname:directory
.PP
This table is used only to preserve information between crashes,
and is read only by
.IR mountd (8)
when it starts up.
.I Mountd
keeps an in-core table,
which it uses to handle requests from programs like
.IR showmount (1)
and
.IR shutdown (8).
.SH FILES
/etc/rmtab
.SH "SEE ALSO"
showmount(1), mountd(8), mount(8), umount(8), shutdown(8)
.SH BUGS
Although the
.I rmtab
table is close to the truth,
it is not always 100% accurate.