at long last, a dumb utility to move files from my computer to my Galaxy S3

mtp-box

#!/usr/bin/env bash

DIR_NAME="/home/nicolas/phone-sync/"
IFS=$'\n'
function main() {

        DIR_KEY=$(mtp-folders | grep "sync" | sed 's/\([0-9]\+\)\s.*/\1/g')
        loadLocalFiles
        loadPhoneFiles

        declare -a toAdd
        declare -a toDelete

        local j=0
        local k=0
        for (( i = 0; i < ${#localFiles[*]}; i++ )); do
                f=${localFiles[$i]}
                flag=false
                for (( k = 0; k < ${#phoneFiles[*]}; k++ )); do
                        comp=${phoneFiles[$k]}
                        echo "compare $f to $comp"
                        if [[ "$f" == "$comp" ]]; then
                                echo "true"
                                flag=true
                                break
                        fi
                done
                if [[ $flag = false ]]; then
                        toAdd[$j]="$f"
                        let j+=1
                fi
        done
        local j=0
        for (( i = 0; i < ${#phoneFiles[*]}; i++ )); do
                f=${phoneFiles[$i]}
                flag=false
                for (( k = 0; k < ${#localFiles[*]}; k++ )); do
                        comp=${localFiles[$k]}
                        if [[ "$f" == "$comp" ]]; then
                                flag=true
                                break
                        fi
                done
                if [[ $flag = false ]]; then
                        toDelete[$j]="${phoneFiles[$j]}"
                        let j+=1
                fi
        done


        for f in "${toAdd[@]}"; do
                echo "send $f"
                mtp-sendfile "$f" $DIR_KEY
        done
        for f in "${toDelete[@]}"; do
                echo "delete $f"
                mtp-delfile -f "$f"
        done
}

localFiles=[]
function loadLocalFiles() {
        local i=0
        for f in $(find "$DIR_NAME" -type f); do
                localFiles[$i]="$(basename $f)"
                let i+=1
        done
}

phoneFiles=[]
function loadPhoneFiles() {
        local i=0
        mtp-files | grep -B 3 $DIR_KEY > data
        while read -r line; do
        # Filename
        if [[ ! -z "$(echo $line | grep "Filename")" ]]; then
                phoneFiles[$i]="$(echo $line | sed 's/\s*Filename:\s*\(.*\)/\1/g')"
                echo ${phoneFiles[$i]}
        fi

        let j+=1
        if [[ "$line" == "--" ]]; then
                let i+=1
                j=0
        fi
        done < data
}

main