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
#!/bin/bash DIR="$( cd "$( 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
#!/bin/bash SOURCE="$0" while [ -h "$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 $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located done DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"