Ubuntu – do not compress just zip files in command line

This technique won't rename the file, but add a lowercase version of the .DIZ file. Hopefully it will be good enough for your purposes.

This takes advantage of zip's "add by default" functionality, in which if you specify an existing zip file, it will add files to it. So if you do:

zip doom.zip file_id.diz

and doom.zip exists, it will just add the file_id.diz file to the existing contents.

This is to be run in the directory where your zip files reside:

for i in  *zip; do rm FILE_ID.DIZ;  unzip "$i" FILE_ID.DIZ; mv FILE_ID.DIZ file_id.diz; zip -d "$i" FILE_ID.DIZ; zip "$i" file_id.diz; done

Note that for best results, none of the .zip file names should contain spaces.

You can also put this in a file, say, rename.sh (and it looks nicer and easier to understand this way):

#!/bin/bash
for i in  *zip; do
   rm FILE_ID.DIZ
   unzip "$i" FILE_ID.DIZ
   mv FILE_ID.DIZ file_id.diz
   zip -d "$i" FILE_ID.DIZ
   zip "$i" file_id.diz
done

then you can run by saying, e.g. bash rename.sh

Yes, it's possible to do this and there's a zip command switch specially designed for that purpose. I'll show you by way of an example, and then you can adapt it to your own purposes.

I first created a zip archive of my script folder with the following command (working from my home folder):

zip -r Scripts.zip Scripts

Now this had 76 items. I then added some 2 pdfs to the Scripts folder on disk and then ran the following command, and transferred just the new and changed files to a new zipfile:

zip -r Scripts.zip Scripts -DF --out new.zip

This was the output:

updating: Scripts/ (stored 0%)
adding: Scripts/GIMP+Magazine+Issue+1.pdf (deflated 2%)
adding: Scripts/Whitepaper-CentralisedLogging-v1.pdf (deflated 10%)

Now only these 2 new files are in new.zip, and they have not been added to the original zip. In the command, the -DF option allowed us to create a 'difference archive' specified with the --out switch, so that any new files present in the folder on disk, but not in the original zip, go to the new zip. So according to the man page, it is indeed possible to

create an archive that contains all new and changed files since the original archive was created. For this to work, the input file list and current directory must be the same as during the original zip operation.

There are some interesting options to play around with for zip, so please see man zip or the Ubuntu manpages online.