Free data recovery software for linux

GNU ddrescue is a data recovery tool. GNU ddrescue copies data from one file or block device (cdrom, hard disc, etc) to another, trying hard to rescue data in case of read errors.
Ddrescue does not truncate the output file if not asked to. So, every time you run it on the same output file, it tries to fill in the gaps.
The basic operation of ddrescue is fully automatic. That is, you dont have to wait for an error, stop the program, read the log, run it in reverse mode, etc.
If you use the logfile feature of ddrescue, the data is rescued very efficiently (only the needed blocks are read). Also you can interrupt the rescue at any time and resume it later at the same point.
Automatic merging of backups: If you have two or more damaged copies of a file, cdrom, etc, and run ddrescue on all of them, one at a time, with the same output file, you will probably obtain a complete and error-free file.
This is so because the probability of having damaged areas at the same places on different input files is very low. Using the logfile, only the needed blocks are read from the second and successive copies.
The logfile is periodically saved to disc. So in case of a crash you can resume the rescue with little recopying.
Also, the same logfile can be used for multiple commands that copy different areas of the file, and for multiple recovery attempts over different subsets.
Ddrescue aligns its I/O buffer to the sector size so that it can be used to read from raw devices. For efficiency reasons, also aligns it to the memory page size if page size is a multiple of sector size.
Whats New in 1.5 Stable Release:
- The license has been updated to GPL version 3 or later.
Whats New in 1.6-pre2 Development Release:
- Support for sparse writes to the output file has been added.

Bacula is a set of computer programs that permit you (or the system administrator) to manage backup, recovery, and verification of computer data across a network of computers of different kinds.

In technical terms, it is a network based backup program.

Bacula is relatively easy to use and efficient, while offering many advanced storage management features that make it easy to find and recover lost or damaged files.

Most of the Bacula source code has been released under a slightly modified version of the GPL version 2 license. If you wish additional details, please follow the License link to your left.

Google Data Objective-C Client provides a framework and source code that make it easy to access data through Google Data APIs.
The Google data APIs provide a simple protocol for reading and writing data on the web. Many Google services provide a Google data API.
Each of the following Google services provides a Google data API:
- Base
- Blogger
- Calendar
- Spreadsheets
- Picasa Web Albums
- Notebook
Additional services with Google data APIs that are not yet supported by the Objective-C Client Library:
- Code Search
- Google Apps Provisioning

Zmanda Recovery Manager for MySQL simplifies life of a database administrator who needs an easy to use yet flexible and robust backup and recovery solution for MySQL server. With ZRM for MySQL you can:
- Schedule full and incremental logical or raw backups of your MySQL database
- Perform backup that is the best match for your storage engine and your MySQL configuration
- Get e-mail notification about status of your backups
- Monitor and browse your backups
- Recover database easily to any point in time or to any particular transaction

Data::Phrasebook::Loader::XML Perl module can abstract your phrases with XML.

SYNOPSIS

use Data::Phrasebook;

my $q = Data::Phrasebook->new(
class => Fnerk,
loader => XML,
file => phrases.xml,
dict => Dictionary, # optional
);

OR

my $q = Data::Phrasebook->new(
class => Fnerk,
loader => XML,
file => {
file => phrases.xml,
ignore_whitespace => 1,
}
);

# simple keyword to phrase mapping
my $phrase = $q->fetch($keyword);

# keyword to phrase mapping with parameters
$q->delimiters( qr{ [% s* (w+) s* %] }x );
my $phrase = $q->fetch($keyword,{this => that});

Data::Diff is a data structure comparison module.

SYNOPSIS

use Data::Diff qw(diff);

# simple procedural interface to raw difference output
$out = diff( $a, $b );

# OO usage
$diff = Data::Diff->new( $a, $b );

$new = $diff->apply();
$changes = $diff->diff_a();

Data::Diff computes the differences between two abirtray complex data structures.

METHODS

Creation

new Data::Diff( $a, $b, $options )

Creates and retruns a new Data::Diff object with the differences between $a and $b.

Access

apply( $options )

Returns the result of applying one side over the other.

raw()

Returns the internal data structure that describes the differences at all levels within.

Functions

Diff( $a, $b, $options )

Compares the two arguments $a and $b and returns the raw comparison between the two.

EXPORT

Nothing by default but you can choose to export the non-OO function Diff().

Evolution Data Server provides a single database for common, desktop-wide information, such as a users address book or calendar events.

Evolution Data Server is also a dependency of the clock applet from the gnome-applets package, 2.10 release.

Evolution provides integrated mail, addressbook and calendaring functionality to users of the GNOME desktop.