Creating archives: main options
To create a new archive select File->New. The New Archive window will appear.
There are seven pages of options in the "New Archive" dialog but in
most cases you will only use the first three, "Archive", "Directories"
and "Files". The first of these, "Archive", is used to set the
- Archive base name - Enter a suitable name for the
archive, for example the name of the root directory of the backup or a
name decribing the contents such as "Photographs" or "Letters". If you
select the option "Add timestamp to name" then a suffix will be added
to the name giving the time and date that the archive was created in
the format yyyymmddhhmm.
Dar will automatically add a slice number
and the suffix "dar" so your final archive will end up with a name like
"Photographs.1.dar" or "Photographs_200901092010.1.dar".
- Save archive in - enter the directory in which you
want to save the archive. For scheduled backups it is recommended that
this directory is outside the root directory of the backup.
- Base directory - enter the root directory of the
backup. This is the which contains all the files and directories that
you want to archive. The directories that you enter on the
"Directories" tab must be in this directory.
For example, you may want to backup only the directories
"/home/John/Documents/Letters" and "/home/John/Documents/Poems". You
would enter "/home/John/Documents/" as your base directory.
- Batch file - batch files are temporary files used
by DarGUI when creating archives. As they are normally created in the
/tmp directory they are usually lost when the system is shut down. You will
only need to change this option if you want to keep the batch file, for
example, if you want to use it as a basis from which to write your own
- Differential backup A differential archive is an
archive which stores the difference between the current state of the
filesystem and the state of the filesystem when you last created a full
backup. Performing a differential backup can take considerably less
time than doing a full backup, and the resulting archive usually takes
up much less space on your filesystem or storage media.
If you select this option you must also specify a Reference archive
which is can be either a Dar archive or a Dar catalog. Dar will examine
the files stored in the reference archive and compare them with the
files on your system. It will only store them in the differential
archive if they have been changed since the reference archive was
Note: If the reference
archive is encrypted this will be indicated by a lock symbol. When
using an encrypted archive of reference, it will not be possible to
schedule the backup to
be created at a later date. If the option to write a backup script is
selected, the script will request a password when it is run, unless it
is manually edited.