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

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

The five basic components of the Linux system are: 1. Kernel, 2. System library, 3. System utilities, 4. Graphical user interface, 5. Applications. The kernel manages hardware resources, the system library provides precompiled functions, system utilities are used for system management, the GUI provides visual interaction, and applications use these components to implement functions.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP is suitable for web development and content management systems, and Python is suitable for data science, machine learning and automation scripts. 1.PHP performs well in building fast and scalable websites and applications and is commonly used in CMS such as WordPress. 2. Python has performed outstandingly in the fields of data science and machine learning, with rich libraries such as NumPy and TensorFlow.

To view the Git repository address, perform the following steps: 1. Open the command line and navigate to the repository directory; 2. Run the "git remote -v" command; 3. View the repository name in the output and its corresponding address.

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.
