使用方法，将下述代码添加到根目录的.profile文件里，再运行source ~/.profile即可。

• 默认参数为以5%恢复记录，15G分包压缩文件夹
• 压缩某个文件夹：rr1 folder_name
• 批量压缩一个文件夹下的每个文件夹：rra
• 如果想要压缩完之后删除源文件节省盒子空间，修改代码里面RAR参数，加个-df参数即可

function rr1 (){
    echo "Compress the folder using rar with 5% recovery record";
    if (($#==1)); then src="$1"; dst="$1";
    elif (($#==2)); then src="$2"; dst="$1";
    else echo "Error. Parameter must be 1 or 2.\n"; return 1; fi

    if [[ $dst != *.rar ]]; then
        if [[ $src == */ ]]; then src=${src%"/"}; fi
        if [[ $dst == */ ]]; then dst=${dst%"/"}; fi
        if [[ -d $dst && ${dst} != *${src} ]]; then
            if [[ $dst == */ ]]; then dst=${dst%"/"}; fi
            dst="${dst}/${src}"
        fi
        dst="${dst}.rar"
    fi

    if [ -f "${dst}" ]; then echo "File exists." return 1; fi
    #tmpf=".rarcompresstmp"
    #mkdir "${tmpf}"; cd "$src"; mv .* ../$tmpf/; cd ..;
    #rar5 "$dst" "$src";
    #cd "$src"; mv ../$tmpf/.* ./; cd ..; rm -rf "$tmpf";
    if [[ -d $src ]]; then removehiddenfile "$src"; fi
    echo "rar5 ${dst} ${src}"
    rar a -m0 -rr5 -ma5 -v16106127360B "$dst" "$src";
}


function rra () {
    if (($#==0)); then rrmusicalldst=".";
    elif (($#==1)); then rrmusicalldst="$1";
    else echo "Error. Parameter must be 1 or 0.\n"; return 1; fi
    IFS=$'\n'
    for i in `ls -1`; do
        if [[ -d $i && "$i" != "*.rar" && "$i" != "*.zip" ]]; then
            echo "rr1 \"${rrmusicalldst}\" \"$i\"";
            rr1 "${rrmusicalldst}" "$i";
            echo "################################################\n"
        fi
    done
    unset IFS
}