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Top Forums Shell Programming and Scripting Problem running zip from cron - bad zipfile offset Post 302937454 by Agreppa on Thursday 5th of March 2015 01:08:00 PM
Old 03-05-2015
Well, turns out it was pretty straighforward. You can create multipart archives with 'zip' but 'unzip' doesn't support extracting them.

The solution is to:
Code:
cat chunk.z01 chunk.z02 ... chunk.zip >joined.zip
zip -FF joined.zip --out joinedfix.zip #fixfix concatenation errors
z #tells zip to look for the main archive
unzip -t joinedfix.zip #test the result, should show no errors
unzip joinedfix.zip

 

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zipnote(1)						      General Commands Manual							zipnote(1)

NAME
zipnote - write the comments in zipfile to stdout, edit comments and rename files in zipfile SYNOPSIS
zipnote [-w] [-b path] [-h] [-q] [-v] [-L] zipfile ARGUMENTS
zipfile Zipfile to read comments from or edit. OPTIONS
-w Write comments to a zipfile from stdin (see below). -b path Use path for the temporary zip file. -h Show a short help. -q Suppress some informational messages. -v Show version information. -L Show software license. DESCRIPTION
zipnote writes the comments in a zipfile to stdout. This is the default mode. A second mode allows updating the comments in a zipfile as well as allows changing the names of the files in the zipfile. These modes are described below. EXAMPLES
To write all comments in a zipfile to stdout use for example zipnote foo.zip > foo.tmp This writes all comments in the zipfile foo.zip to the file foo.tmp in a specific format. If desired, this file can then be edited to change the comments and then used to update the zipfile. zipnote -w foo.zip < foo.tmp The names of the files in the zipfile can also be changed in this way. This is done by following lines like "@ name" in the created temporary file (called foo.tmp here) with lines like "@=newname" and then using the -w option as above. BUGS
The temporary file format is rather specific and zipnote is rather picky about it. It should be easier to change file names in a script. Does not yet support large (> 2 GB) or split archives. SEE ALSO
zip(1), unzip(1) AUTHOR
Info-ZIP v3.0 of 8 May 2008 zipnote(1)
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