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01-11-2006

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may a corrupted .gz file be repaired?

Preparing for a move to a new server, I needed to offload about somewhat over a gigabyte of newsfeeds that my website collects, and that I had been saving on the server. I tarred them and zipped them into about a dozen smaller files of about 150Mb each. All seemed well. I downloaded them onto my Windows pc. The website was moved (http://schema-root.org). My plan was to move them back to the new server, strip them from their rss formats and load the news items into a database. However, in my newbieness I managed to transfer the gzipped files in ascii mode (both directions!). So they won't unzip now, either on my pc, or on the server.

Using:

> gunzip < d200512.tar.gz | tar xvf -

I was able to extract a few percent of the files from the first archive I tried, maybe a hundred of five thousand or so.

My question is: Would it be possible to get rid of the linefeed-carriage returns that were inserted into the zip file by being ftp'ed in ascii mode, back to what they were before I screwed them up? In my innocence, I am imagining that every existing linefeed byte in the original zip file (bytes that happened to be linefeeds) had a carrage return byte added after it during the ftp transfer in ascii mode. And so I am wondering whether there might be some utility somewhere that would strip them back out, and if there were such a utility, whether it would be likely to produce a zip file that could be unzipped.

Otherwise I lose a ton of newsfeeds.

Thanks for any help.
John

JohnTinker

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LEARN ABOUT REDHAT

newsrequeue

NEWSREQUEUE(8)						      System Manager's Manual						    NEWSREQUEUE(8)

NAME

       newsrequeue - tool to rewrite batchfiles.

SYNOPSIS

       newsrequeue [ -a active ] [ -h history ] [ -n newsfeeds ] [ input ]

DESCRIPTION

       Newsrequeue  can  be used to rewrite batchfiles after a system crash.  It reads from the specified input file, or standard input if no file
       is specified.  Each line should look like an innd log entry.  It parses entries for accepted articles, looks up the Message-ID in the  his-
       tory database to get the filename, and then scans the list of sites.

OPTIONS

       -a     To specify alternate locations for the active file, use the ``-a'' flag.

       -n     Use the ``-n'' flag to specify an alternate location for the newsfeeds(8) file.

       -h     Use the ``-h'' flag to specify a different location for the history database,

HISTORY

       Written by Rich $alz <rsalz@uunet.uu.net> for InterNetNews.  This is revision 1.4.2.1, dated 2000/08/20.

SEE ALSO

       active(5), ctlinnd(8), dbz(3), filechan(8), history(5), inn.conf(5), innd(8), newsfeeds(5), makehistory(8).

																    NEWSREQUEUE(8)