@end defvr
@defvr {Backup variable} TAPE_FILE
-The device @command{tar} writes the archive to. This device should be
-attached to the host on which the dump scripts are run.
+
+The device @command{tar} writes the archive to. If @var{TAPE_FILE}
+is a remote archive (@pxref{remote-dev}), backup script will suppose
+that your @command{mt} is able to access remote devices. If @var{RSH}
+(@pxref{RSH}) is set, @option{--rsh-command} option will be added to
+invocations of @command{mt}.
@end defvr
@defvr {Backup variable} BLOCKING
or restore. By default it is @file{/etc/backup/files}.
@end defvr
-@defvr {Backup variable} RSH
+@defvr {Backup variable} MT
-Path to @code{rsh} binary or its equivalent. You may wish to
+Full file name of @command{mt} binary.
+@end defvr
+
+@defvr {Backup variable} RSH
+@anchor{RSH}
+Full file name of @command{rsh} binary or its equivalent. You may wish to
set it to @code{ssh}, to improve security. In this case you will have
to use public key authentication.
@end defvr
@defvr {Backup variable} RSH_COMMAND
-Path to rsh binary on remote mashines. This will be passed via
-@option{--rsh-command} option to the remote invocation of @GNUTAR{}.
+Full file name of @command{rsh} binary on remote mashines. This will
+be passed via @option{--rsh-command} option to the remote invocation
+of @GNUTAR{}.
@end defvr
@defvr {Backup variable} VOLNO_FILE
@defvr {Backup variable} TAR
-Pathname of the @GNUTAR{} executable. If this is not set, backup
+Full file name of the @GNUTAR{} executable. If this is not set, backup
scripts will search @command{tar} in the current shell path.
@end defvr
@cindex Standard input and output
@cindex tar to standard input and output
+@anchor{remote-dev}
To specify an archive file on a device attached to a remote machine,
use the following: