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How to use shell to modify the contents of a specified file

WBOY
Release： 2023-03-01 19:22:01
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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

<code class="php">define('STATIC_VERSION', '2016.11.25.01.stable-v1');</code>
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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

<code class="php">define('STATIC_VERSION', '2016.11.25.01.stable-v1');</code>
Copy after login
Copy after login

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>
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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>
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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

Related labels：
bash linux php shell unix
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