Unzipping multi-part ZIP archives.

Usually, the parts have names like this

To unpack the lot, do the following:
  1. concatenate the name.zNN files in lexicographical order, followed by the name.zip file
    cat name.z0? name.zip > name-all.zip
  2. Correct some internal directory structure to reflect the fact that all parts are now in the same file.
    zip -F name-all.zip 
    Omitting this step leads to errors:
    $ unzip name-all.zip
    Archive:  name-all.zip
    warning [name-all.zip]:  zipfile claims to be last disk of a multi-part
    attempting to process anyway, assuming all parts have been concatenated
    together in order.  Expect "errors" and warnings...true multi-part
    support doesn't exist yet (coming soon).
    warning [name-all.zip]:  12582912 extra bytes at beginning or within zipfile
              (attempting to process anyway)
    file #1:  bad zipfile offset (local header sig):  12582916
    	  (attempting to re-compensate)
  3. unpack as usual
    unzip name-all.zip
  4. It may be that directories do not have the 'x' (executable) bit set:
    find . type d -exec chmod ugo+x \{} \;

Dirk Vermeir (dvermeir@vub.ac.be) [Last modified: Wed Mar 25 21:25:19 CET 2009 ]