title: Unzipping the multipart file - bad zipfile offset (local header sig): 4
body: <p>I have a file with 13 GB, which has been split equally using martipart feature in the Winzip(Windows 7). </p>
  
  <p>I  uploaded the files to the Linux server and I am trying to combine the multipart file to single file. But I am running through the following error. </p>
  
  <p>Files after being split, </p>
  
  <pre><code>  total 9646432
    -rw-r--r-- 1 root root 730000000 Apr 14 20:57 file.z01
    -rw-r--r-- 1 root root 730000000 Apr 14 20:07 file.z02
    -rw-r--r-- 1 root root 730000000 Apr 14 20:01 file.z03
    -rw-r--r-- 1 root root 730000000 Apr 14 16:30 file.z04
    -rw-r--r-- 1 root root 730000000 Apr 14 16:24 file.z05
    -rw-r--r-- 1 root root 730000000 Apr 14 16:14 file.z06
    -rw-r--r-- 1 root root 730000000 Apr 14 16:08 file.z07
    -rw-r--r-- 1 root root 730000000 Apr 14 15:51 file.z08
    -rw-r--r-- 1 root root 730000000 Apr 14 15:46 file.z09
    -rw-r--r-- 1 root root 730000000 Apr 14 15:32 file.z10
    -rw-r--r-- 1 root root 730000000 Apr 14 15:27 file.z11
    -rw-r--r-- 1 root root 730000000 Apr 14 15:20 file.z12
    -rw-r--r-- 1 root root 730000000 Apr 14 14:28 file.z13
    -rw-r--r-- 1 root root 349166077 Apr 14 21:00 file.zip
  </code></pre>
  
  <p>Command in server, </p>
  
  <pre><code> #zip file.zip
  </code></pre>
  
  <p>I am running into the error, </p>
  
  <pre><code>Archive:  file.zip
  warning [file.zip]:  zipfile claims to be last disk of a multi-part archive;
  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).
   file #1:  bad zipfile offset (local header sig):  4
  </code></pre>
  
  <p>I have tested the same for test file with 27MB ,</p>
  
  <pre><code> #ls
  test.z01  test.z02  test.z03  test.z04  test.z05  test.zip
  
  
   [tbabu@fgtd-301705-130558-app001 .tbabu]$ unzip test.zip
  Archive:  test.zip
  warning [test.zip]:  zipfile claims to be last disk of a multi-part archive;
  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).
  file #1:  bad zipfile offset (local header sig):  4
  file #2:  bad zipfile offset (local header sig):  207105
  file #3:  bad zipfile offset (local header sig):  209345
  ..
  ..
  file #302:  bad zipfile offset (lseek):  2924544
  file #303:  bad zipfile offset (lseek):  2940928
  ..
  ..
  ..
  inflating: en_US/1/2.zip
  ..
  ..
  ..
  </code></pre>
  
  <p>I am able to combine the files in the test eventhough I get above message. </p>
  
  <p>Why is not working with the 13Gb file??</p>
  
  <p>Assistance would be much appreciated. </p>