How to use shell to modify the contents of a specified file
现在要写一个shell 更新完静态资源后自动添加其版本号
比如有webroot/a.php
define('STATIC_VERSION', '2016.11.25.01.stable-v1');
执行脚本后将STATIC_VERSION
常量中的2016.11.25.01.stable-v1
,更改为:当前年.当前月.当前日.两位随机数.可定义的字符串
这种需求该怎样去实现呀?感谢各位专业大神
回复内容:
现在要写一个shell 更新完静态资源后自动添加其版本号
比如有webroot/a.php
define('STATIC_VERSION', '2016.11.25.01.stable-v1');
执行脚本后将STATIC_VERSION
常量中的2016.11.25.01.stable-v1
,更改为:当前年.当前月.当前日.两位随机数.可定义的字符串
这种需求该怎样去实现呀?感谢各位专业大神
保存下面代码为build.sh
文件
<code>#!/bin/bash FILENAME=$1 VERSION_STR=$2 # 这里需要使用自己的随机数生成方式 RAND_STR=03 VERSION=`date +%Y.%m.%d.$RAND_STR.$VERSION_STR` sed "/define('STATIC_VERSION'/ c define('STATIC_VERSION', '$VERSION')" $FILENAME </code>
之后需要添加执行权限chmod +x build.sh
。
使用方式:
<code>./build.sh test.php stable-v1</code>
谢邀,勉强写个。
由于实际应用中,采用行替换非常不灵活,此答案忽略,采用楼下的正则匹配。version='2016.11.25.01.stable-v2'
sed -i "3cdefine('STATIC_VERSION', '$version');" ./test.php

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