Free recovery software for linux

The gzip Recovery Toolkit attempts to automate the recovery of data from corrupted gzip files (including tarballs) through a program called gzrecover. gzip Recovery Toolkit package is still very experimental at this point.
99% of "corrupted" gzip archives are caused by transferring the file via FTP in ASCII mode instead of binary mode. Please re-transfer the file in the correct mode first before attempting to recover from a file you believe is corrupted.
This program is provided AS IS with absolutely NO WARRANTY. It is not guaranteed to recover anything from your file, nor is what it does recover guaranteed to be good data. The bigger your file, the more likely that something will be extracted from it. Also keep in mind that this program gets faked out and is likely to "recover" some bad data. Everything should be manually verified.
Usage:
Run gzrecover on a corrupted .gz file. Anything that can be read from the file will be written to a file with the same name, but with a .recovered appended (any .gz is stripped). You can override this with the -o option.
To get a verbose readout of exactly where gzrecover is finding bad bytes, use the -v option to enable verbose mode. This will probably overflow your screen with text so best to redirect output to a file.
Once gzrecover has finished, you will need to manually verify any data recovered as it is quite likely that our output file is corrupt and has some garbage data in it. If your archive is a tarball, read on.
For tarballs, the tar program will choke because GNU tar cannot handle errors in the file format. Fortunately, GNU cpio (tested at version 2.5 or higher) handles corrupted files out of the box.
Heres an example:
$ ls *.gz
my-corrupted-backup.tar.gz
$ gzrecover my-corrupted-backup.tar.gz
$ ls *.recovered
my-corrupted-backup.tar.recovered
$ cpio -F my-corrupted-backup.tar.recovered -i -v
If you have a previous release, please note that the patches to GNU tar have been discontinued. They were only marginally successful at best and GNU cpio does what is needed out of the box and does it far better.
Enhancements:
- Documentation updates, including a man page, plus code cleanup to better enable inclusion in GNU/Linux packages and eliminate compilation warnings.

Make CD-ROM Recovery makes a bootable (El Torito) disaster recovery image (CDrec.iso), including backups of the linux system to the same CD-ROM (or CD-RW) if space permits, or to a multi-volume CD-ROM set. Otherwise, the backups can be stored on another local disk, NFS disk or (remote) tape.

After a disaster (disk crash or system intrusion) the system can be booted from the CD-ROM and one can restore the complete system as it was (at the time mkCDrec was run) with the command /etc/recovery/start-restore.sh

Disk cloning (clone-dsk.sh script) allows one to restore a disk to another disk (the destination disk does not have to be of the same size as it calculates the partition layout itself). A thrid script, restore-fs.sh, will restore only one filesystem to a partition of your choice, and the user can choose with which filesystem the partition has to be formatted.

Linux 2.2.x, 2.4.x and 2.6.x kernels are supported, and if size of the kernel is not too big a boot floppy can be made, otherwise a 2.88 Mb boot floppy will be emulated on CD-ROM.

MkCDrec supports ext2 , ext3, minix, xfs , jfs, reiserfs file systems, LVM and software RAID (multiple devices). Each file system is backed up as a compressed tar archive (including the tar log). The compress program used is the users choice (compress, gzip, bzip2, lzop,...)

But there is more: msdos, fat, vfat and ntfs mounted partitions are recognized and are saved as compressed dumps (on CD, tape, etc.)
The user has the possibility to encrypt all backups with openssl if desired (see the Config.sh configuration file for more information).

To restore your system completely just boot from the first CD-ROM made by mkCDrec and type "/etc/recovery/start-restore.sh " to restore everything from CD. Automatic Disaster Recovery and One Button Disaster Recovery are supported by mkCDrec too.
With the clone-dsk.sh script one can restore selective a disk or partitions to another free disk.

mkCDrec supports IDE (inclusive ATA), SCSI disks, hardware RAID based disks (e.g. Compaq SMART2 Disk Array), LVM and software RAID. With an El-Torito CD-ROM you can boot from an IDE or SCSI based CD-ROM drive on IA32/64, powermac and x86_64 GNU/Linux based computer systems only.

A tool to take that corrupted Netscape Address Book and get your information out of it. This is a tool to take that corrupted Netscape Address Book and get your information out of it. After the third time my book got corrupted, I gave up trying to fix it by hand and wrote this program. This program attempts to get as much information out of the address book as is possible. But as with all programs of this type, it will always need to change to keep track of the different ways in which the address book can be corrupted. It can output .csv (Comma Separated Values) or .ldi (LDAP Date Interchange Format) files.Dont output .csv files, you will lose all mailing list information.
Enhancements:
- Major bugfixes with handling indexes
- Major bugfixes with handling edits
- Added LDIF support
- Added support for mailling lists

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

myrescue is a program to rescue the still-readable data from a damaged harddisk. The project is similiar in purpose to dd_rescue, but it tries to quickly get out of damaged areas to first handle the not yet damaged part of the disk and return later.

Note:

This tools is no replacement for a professional data recovery service! If you do have the latter option, dont even think of using myrescue, as it may further damage your disk. This tool is provided only for the case that you are absolutely desperate and definitely cannot afford a professional data recovery. Or in case you know what you are doing, e.g. if you know that it is the aging of the magnetisation layer that is causing your problem.

The usual GPL disclaimer applies. Especially the NON-WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. Dont blame (or sue) me if it fails to recover or further damages your data.

How it works

The program tries to copy the device blockwise to a file and keeps a table ("block bitmap") noting whether a block has been successfully copied, not yet handled or has had errors. This block bitmap can be used in successive runs to concentrate on the not yet rescued blocks.

The program has a special skip mode to handle read errors. Usually harddisk surface defects cover more than just one block and continuous reading in defect areas can damage the surface, the heads and (by permanent recalibration) the drive mechanics. If this happens, the chances of rescuing the remaining undamaged data drop dramatically. So in skip mode, myrescue tries to get out of damaged areas quickly by exponentially increasing the stepsize. The skipped blocks are marked as unhandled in the block bitmap and can be retried later.

Finally, the program has an option to multiply try to read a block before considering it damaged.

Veejay is a visual instrument and realtime video sampler. Veejay allows you to "play" the video like you would play a piano. While playing, you can record the resulting video directly to disk (video sampling). Veejay can be operated live by using the keyboard (which is 100% user definable) and / or remotely over ethernet.
Veejay can be used to manipulate video in a realtime environment i.e. VeeJay for visual performances or for (automated) interactive video installations.
Main features:
- Client/Server architecture
- Soft Realtime
- Native YUV processing
- Frame accurate
- Loop based editing (always playing)
- Non destructive editing
- Trickplay (scratch, marker, speed, direction)
- Mix your videos in the FX chain
- 126 built-in effects incl. luma , chroma key,
- Effect parameter animation
- Support for FreeFrame and Frei0r
- Support for truetype fonts
- Audio playback through Jack
- Audio rendering
- Load Quicktime, AVI and rawdv movie files
- Video output to SDL, OpenGL
- Full support for DV and MJPEG
- Live clip loading
- Live harddisk recording
- Live sample sequencing
- Live text
- Live camera(s) support
- Can stream over the network
- Deck save/restore
- Crash Recovery
- Dynamic output framerate
- Support for Open Sound Control
- Support for pure-data through sendVIMS external
- Free Software (GNU GPL)

DParser project is an simple but powerful tool for parsing. You can specify the form of the text to be parsed using a combination of regular expressions and grammar productions.
Because of the parsing technique (technically a scannerless GLR parser based on the Tomita algorithm) there are no restrictions.
The grammar can be ambiguous, right or left recursive, have any number of null productions, and because there is no seperate tokenizer, can include whitespace in terminals and have terminals which are prefixes of other terminals.
DParser handles not just well formed computer languages and data files, but just about any wacky situation that occurs in the real world.
Main features:
- Powerful GLR parsing
- Simple EBNF-style grammars and regular expression terminals
- Priorities and associativities for token and rules
- Built-in error recovery
- Speculative actions (for semantic disambiguation)
- Auto-building of parse tree (optionally)
- Final actions as you go, or on the complete parse tree
- Tree walkers and default actions (multi-pass compilation support)
- Symbol table built for ambiguous parsing
- Partial parses, recursive parsing, parsing starting with any non-terminal
- Whitespace can be specified as a subgrammar
- External (C call interface) tokenizers and external terminal scanners
- Good asymptotically efficiency
- Comes with ANSI-C, Python and Verilog grammars
- Comes with full source
- Portable C for easy compilation and linking
- BSD licence, so you can included it in your application without worrying about licensing
Enhancements:
- Removed call to exec in python interface (Brian Sabbey)
- Fix binary_op_left in python interface (Brian Sabbey)