How do I recursively unzip nested ZIP files?

Question

Given there is a secret file deep inside a nested ZIP file, i.e. a zip file inside a zip file inside a zip file, etc...

The zip files are named 1.zip, <

Answer 1

Here's my 2 cents.

#!/bin/bash

function extract(){
  unzip $1 -d ${1/.zip/} && eval $2 && cd ${1/.zip/}
  for zip in `find . -maxdepth 1 -iname *.zip`; do
    extract $zip 'rm $1'
  done
}

extract '1.zip'

Answer 2

Thanks Cyrus! The master wizard Shawn J. Goff had the perfect script for this:

while [ "`find . -type f -name '*.zip' | wc -l`" -gt 0 ]; do find -type f -name "*.zip" -exec unzip -- '{}' \; -exec rm -- '{}' \;; done

Answer 3

Probably not the cleanest way, but that should do the trick:

#!/bin/sh
IDX=1 # ID of your first zip file
while [ 42 ]
do
    unzip $IDX.zip # Extract
    if [[ $? != 0 ]]
    then
        break # Quit if unzip failed (no more files)
    fi
    if [ $IDX -ne 1 ]
    then
        rm $IDX.zip # Remove zip to leave your directory clean
    fi
    (( IDX ++ )) # Next file
done

Answer 4

Checkout this java based utility nzip for nested zips.

Extracting and compressing nested zips can be done easily using following commands:

java -jar nzip.jar -c list -s readme.zip 

java -jar nzip.jar -c extract -s "C:\project\readme.zip" -t readme 

java -jar nzip.jar -c compress -s readme -t "C:\project\readme.zip" 

PS. I am the author and will be happy to fix any bugs quickly.