So you thought you had your files backed up - until it came time to restore. Then you found out that you had bad sectors and you've lost almost everything because gzip craps out 10% of the way through your archive. The gzip Recovery Toolkit has a program - gzrecover - that attempts to skip over bad data in a gzip archive. This saved me from exactly the above situation. Hopefully it will help you as well.
I'm very eager for feedback on this program. If you download and try it, I'd appreciate and email letting me know what your results were. My email is firstname.lastname@example.org. Thanks.
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.
Note that version 0.8 contains major bug fixes and improvements. See the ChangeLog for details. Upgrading is recommended. The old version is provided in the event you run into troubles with the new release.
You need the following packages:
First, build and install zlib if necessary. Next, unpack the gzrt sources.
Then cd to the gzrt directory and build the gzrecover program by typing
make. Install manually by copying to the directory of your
Run gzrecover on a corrupted .gz file. If you leave the filename blank, gzrecover will read from the standard input. 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