Convert filenames to NFC so that DSM can correctly handle filenames (and files be seen from other OSes using NFD normalization(macOS/Linux))

Synology utf8(NFC) conversion script

#!/bin/sh

encode() {
    prefix=$1
    ls -a | while read line
    do
        if [ "." == "$line" ] || [ ".." == "$line" ]; then
            continue
        fi

        BEFORE="$line"
        AFTER=`echo "$BEFORE" | uconv -f utf-8 -t utf-8 -x NFC`
        if [ -d "$BEFORE" ]; then
            echo "$prefix Dir [$BEFORE]"
            cd -- "$BEFORE"
            encode "$prefix-"
            cd ..
        fi

        if [ "$BEFORE" != "$AFTER" ]; then
            if [ -e "$AFTER" ]; then
                echo "target file existed, ignore [$BEFORE]"
                continue
            fi
            mv "$BEFORE" "$AFTER"
            echo "[$BEFORE] -> [$AFTER]"
        fi

    done
}

encode ""

I've been having issue with files disappearing from SMB shared folders. I contacted Synology support team and they gave me above script. I just went over this Reddit thread the other day and thought I can share the script. Issue has been fixed since.