[afnog] EXTRACTING A ZIP FILE ISSUE

[Grace]

Dear Stephane,

I did both -F and -FF before posting this message and here is the error:

inflating: xx.sql               bad CRC f36776d0  (should be b6dfd2b4)

  inflating: xx.sql               bad CRC f36776d0  (should be b6dfd2b4)

On 10/21/2015 12:30 PM, Stephane Bortzmeyer wrote:
> On Wed, Oct 21, 2015 at 11:25:08AM +0200,
>   Grace <grace.i at ricta.org.rw> wrote
>   a message of 28 lines which said:
>
>> Archive:  xx.bak.zip
>> error [xx.bak.zip]:  start of central directory not found;
>> zipfile corrupt.
> On Unix, zip has options to fix broken files:
>
>         -F
>         --fix
>         -FF
>         --fixfix
>
> The good practice is to start with -F (which is more gentle) and, if
> it fails, try with the harsher -FF. (In your case, giving the error
> message, you will probably needs -FF.)
>
>  From the manual:
>
>                Fix  the  zip archive. The -F option can be used if some portions of the archive are miss‐
>                ing, but requires a reasonably intact central directory.  The input archive is scanned  as
>                usual,  but zip will ignore some problems.  The resulting archive should be valid, but any
>                inconsistent entries will be left out.
>
>                When doubled as in -FF, the archive is scanned from the beginning and zip scans  for  spe‐
>                cial  signatures to identify the limits between the archive members. The single -F is more
>                reliable if the archive is not too much damaged, so try this option first.

-- 
Grace INGABIRE
SYSTEM & NETWORK MANAGER
grace.i at ricta.org.rw
+250 788424148
www.ricta.org.rw
RICTA