Shell Script Pointers?

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Hey Listee's

I am trying to write a shell script to sort and compare my blacklist
for squidGuard with the nightly updates that come down in a tar ball.
It should be rather simple but I'm not to grate at this. The script is
to run nightly, it will download the latest blacklist tarball, un tar
it and then add any new entries to the existing black list. The
blacklists work by having a folder for each filtered category so the
folder "db" contains the subfolders "adult", "gambling", "drugs" etc
and each sub folder has two files, "domains" and "urls" (pretty self
explanitory). This is how far I have gotten (I haven't tested this
script yet as I haven't had a chance I have only gotten as far as
writting it, this is what I have so far:


#!/bin/bash
#This will be running from home directory

wget http://www.blacklistsite.com/blacklist.tar
tar -cxf blacklist.tar
cd BL

find ./ -type d -maxdepth 1 | while read FOLDER; do
        SQUIDDB="usr/local/squidGuard/db/$FOLDER"
        sort_db($SQUIDDB)
        comm -3 $SQUIDDB/domains $FOLDER/domains > $SQUIDDB/domains.missing
        comm -3 $SQUIDDB/urls $FOLDER/urls > $SQUIDDB/urls.missing
        cat $SQUIDDB/domains.missing >> $SQUIDDB/domains
        cat $SQUIDDB/urls.missing >> $SQUIDDB/urls
        rm $SQUIDDB/domains.missing
        rm $SQUIDDB/urls.missing
        sort_db($SQUIDDB)
done

sort_db(){
        sort -f $1/domains > $1/domains.sorted
        sort -f $1/urls > $1/urls.sorted
        rm $1/domains
        rm $1/urls
        mv $1/doamins.sorted $1/domains
        mv $1/urls.sorted $1/urls
}

Is it obvious I'm new to this? Hehe, I would also love to hear how
people would do this in a more efficient manner because obvisouly this
is pretty sloppy and as I said I haven't tested it yet so it might not
even run?!

Thanks, James ;)

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