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The user name of the backup administrator. Backup scripts
sends a backup report to this address.
The hour at which the backups are done. This can be a number from 0 to 23, or the time specification in form hours:minutes, or the string ‘now’.
This variable is used by backup. Its value may be overridden
using ‘--time’ option (see section Using the Backup Scripts).
The device tar writes the archive to. If TAPE_FILE
is a remote archive (see remote-dev), backup script will suppose
that your mt is able to access remote devices. If RSH
(see RSH) is set, ‘--rsh-command’ option will be added to
invocations of mt.
The blocking factor tar will use when writing the dump archive.
See section The Blocking Factor of an Archive.
A list of file systems to be dumped (for backup), or restored
(for restore). You can include any directory
name in the list — subdirectories on that file system will be
included, regardless of how they may look to other networked machines.
Subdirectories on other file systems will be ignored.
The host name specifies which host to run tar on, and should
normally be the host that actually contains the file system. However,
the host machine must have GNU tar installed, and
must be able to access the directory containing the backup scripts and
their support files using the same file name that is used on the
machine where the scripts are run (i.e., what pwd will print
when in that directory on that machine). If the host that contains
the file system does not have this capability, you can specify another
host as long as it can access the file system through NFS.
If the list of file systems is very long you may wish to put it
in a separate file. This file is usually named
‘/etc/backup/dirs’, but this name may be overridden in
‘backup-specs’ using DIRLIST variable.
The name of the file that contains a list of file systems to backup or restore. By default it is ‘/etc/backup/dirs’.
A list of individual files to be dumped (for backup), or restored
(for restore). These should be accessible from the machine on
which the backup script is run.
If the list of individual files is very long you may wish to store it
in a separate file. This file is usually named
‘/etc/backup/files’, but this name may be overridden in
‘backup-specs’ using FILELIST variable.
The name of the file that contains a list of individual files to backup or restore. By default it is ‘/etc/backup/files’.
Full file name of mt binary.
Full file name of rsh binary or its equivalent. You may wish to
set it to ssh, to improve security. In this case you will have
to use public key authentication.
Full file name of rsh binary on remote machines. This will
be passed via ‘--rsh-command’ option to the remote invocation
of GNU tar.
Name of temporary file to hold volume numbers. This needs to be accessible by all the machines which have file systems to be dumped.
Name of exclude file list. An exclude file list is a file located on the remote machine and containing the list of files to be excluded from the backup. Exclude file lists are searched in /etc/tar-backup directory. A common use for exclude file lists is to exclude files containing security-sensitive information (e.g., ‘/etc/shadow’ from backups).
This variable affects only backup.
Time to sleep between dumps of any two successive file systems
This variable affects only backup.
Script to be run when it’s time to insert a new tape in for the next
volume. Administrators may want to tailor this script for their site.
If this variable isn’t set, GNU tar will display its built-in
prompt, and will expect confirmation from the console. For the
description of the default prompt, see change volume prompt.
Message to display on the terminal while waiting for dump time. Usually this will just be some literal text.
Full file name of the GNU tar executable. If this is not set, backup
scripts will search tar in the current shell path.
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