The python script mentioned was written by someone other than myself. They use several python tricks -- which may or may-not have equivelents in perl (i am no expert in cracking open binary files)

Below is the python code as mentioned.

#!/usr/bin/env python
import sys  # sys.argv[1]
import os   # os.walk(home)
import gzip # gzip.open(filename)
import commands # commands.getoutput

home = "./FFCache/"
if sys.argv[1:]: home = sys.argv[1] 

cachedata = "../../Documents/cachedata/"
#commands.getoutput('chmod -R ../../Documents')
#if sys.argv[2:]: cachedata = sys.argv[2]
#commands.getoutput('rm -R cachedata')
#commands.getoutput('rmdir cachedata')
#os.mkdir(cachedata)

#print "Making directory ", cachedata, "for copying cached files.\n"
for root, dirs, files in os.walk(home):
    for filename in files:
        if "_CACHE_" in filename:
            continue
        content = None
        try:
            f = gzip.open(root + filename,"rb")
            data = f.read()
            if 'PNG' in data[:10]:
                content = "png"
            elif 'GIF89a' in data[:10]:
                content = "gif"
            elif 'JFIF' in data[:10]:
                content = "jpeg"
            elif 'HTML' in data[:20]:
                content = "html"
            elif 'html' in data[:20]:
                content = "html"
            else:
                continue
            #print "Copying ",filename," -> ", cachedata + filename +"
+."+ content
            #print data[:20]
            f_out = open(cachedata + filename +"."+ content, "wb")
            f_out.write(data)
            #os.chmod(f_out, 0777)            
        except IOError:
            f = open(root + filename,"rb")
            data = f.read()
            if 'PNG' in data[:10]:
                content = "png"
            elif 'GIF89a' in data[:10]:
                content = "gif"
            elif 'JFIF' in data[:10]:
                content = "jpeg"
            elif 'HTML' in data[:20]:
                content = "html"
            elif 'html' in data[:20]:
                content = "html"
            else:
                continue
            #print "Copying ",filename," -> ", cachedata + filename +"
+."+ content
            #print data[:50]
            f_out = open(cachedata + filename +"." + content, "wb")
            f_out.write(data)
            #os.chmod(f_out, 0777)

commands.getoutput('chmod -R 777 cachedata')
[download]

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