前几天写的七牛的参赛demo，用bash写了一个便捷安装的脚本，涉及到了路径相关的判断，从stackoverflow，加上自己的实践整理一下。简单版下面是一个最简单的实现，可以解决大多数问题，缺陷是对于软链接显示的是软链接所在的目录lineos:false复制代码 代码如下:#!/bin/bashDIR="$( cd "$( dirname "$0"  )" && pwd  )"完善版这个版本解决了使用ln -s target linkName创造软链接无法正确取到真实脚本的问题。lineos:false复制代码 代码如下:#!/bin/bashSOURCE="$0"while [ -h "$SOURCE"  ]; do # resolve $SOURCE until the file is no longer a symlink    DIR="$( cd -P "$( dirname "$SOURCE"  )" && pwd  )"    SOURCE="$(readlink "$SOURCE")"    [[ $SOURCE != /*  ]] && SOURCE="$DIR/$SOURCE" # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was locateddoneDIR="$( cd -P "$( dirname "$SOURCE"  )" && pwd  )"