取得絕對路徑...大致有效啦

abspath.sh

abspath(){
    local result
    if [[ "$1" =~ ^(/|~).*$ ]]; then
        result="$1"
    else
        result="$(pwd)/$1"
    fi
    if [[ ! "$result" =~ ^.+/$ ]]; then
        result="$result/"
    fi
    printf $result
}