Fix Syntax error: unexpected end of file in a “for loop”

Question

So I tried to fix this problem by myself for a couple of hours but I couldn't here's the code block that has a problem I changed it, rewritten, I even tried to "do" only echo after each line but it doesn't seem to work. It is a code to decrypt CSV files of a game for some event thing. In case u want, here's full code https://pastebin.com/Gv3Fvyxy

for path in $(find assets -name "*.csv")
    do 
    f=$(echo "$path" | rev | cut -d"/" -f1 | rev)
    (
        dd if=$path bs=1 count=9 status=none
        dd if=/dev/zero bs=1 count=4 status=none
        dd if=$path bs=1 skip=9 status=none
    ) | lzma -dc -f > "decrypted/"$f

    done

Answer 1

An enhanced version of the script:

#!/bin/bash

find assets -name '*.csv' -exec bash -c '
    f="$(awk '{print $NF}' <<< "$1")"
    {
        dd if="$1" bs=1 count=9 status=none
        dd if=/dev/zero bs=1 count=4 status=none
        dd if="$1" bs=1 skip=9 status=none
    } | lzma -dc -f > "decrypted/$f"

' -- {} \;

• take care of files with spaces in names
• simplify rev|cut|rev by awk
• use more quotes !

Learn how to quote properly in shell, it's very important :

"Double quote" every literal that contains spaces/metacharacters and every expansion: "$var", "$(command "$var")", "${array[@]}", "a & b". Use 'single quotes' for code or literal $'s: 'Costs $5 US', ssh host 'echo "$HOSTNAME"'. See
http://mywiki.wooledge.org/Quotes
http://mywiki.wooledge.org/Arguments
http://wiki.bash-hackers.org/syntax/words

Answer 2

You don't show here the same version of script that you posted to pastebin.

The pastebin code has this line (57):

    f= $(echo "$path" | rev | cut -d "/" -f1 | rev)

In which there is an space after the =, that is a syntax problem.

Probably it is there (or close to it) that your script is failing.

And, in fact, that whole line could be simplified to:

    f=${path##*/}

But you also have many small code errors. Most of them could be detected and resolved by following the recommendations from shellcheck.net. Paste your script there and clean it up.

A cleaned-up version may look as:

#!/bin/bash

Usage(){ echo "Usage: $0 [-n filename.apk]"; exit; }

case $1 in
    -h) Usage;;
    -n) if [ -z "$2" ];then
        echo "You need to insert a filename"
        Usage
    fi
    filename=$2
    ;;
    *)  echo "Give me the clash royale filename"
        read -r filename
    ;;
esac

if [ ! -f "$filename" ];then
    echo "File \"$filename\" not found!"; exit
fi

#Unzipping
echo "Unzipping crash royale apk"
unzip -o -q "$filename" -d "extracted"

#Decrypting
echo "Decrypting csv files"
mkdir decrypted
find assets -name '*.csv' -exec bash -c '
    f="${1##*/}"
    {
        dd if="$1" bs=1 count=9 status=none
        dd if=/dev/zero bs=1 count=4 status=none
        dd if="$1" bs=1 skip=9 status=none
    } | lzma -dc -f > "decrypted/$f"

' sh {} \;

echo "All the decrypted file are stored in the decrypted folder"

#Delete partial files
rm -r extracted