apt | 易学教程

How to use java annotations to modify source code before final compilation?

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问题 I've read from the apt tool page that one can create AnnotationProcessors to generate new derived files (source files, class files, deployment descriptors, etc.). I am looking for example to do so. My need is to encode all annotated strings at compile time, so that reading the class file does not allow reading the static strings: Base code: String message = (@Obfuscated "a string that should not be readable in class file"); Should be reworked as: String message = new ObfuscatedString(new long

ubuntu安装jdk

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（1）添加ppa（源） sudo add-apt-repository ppa:webupd8team/java sudo apt-get update 2）安装oracle-java-installer sudo apt-get install oracle-java8-installer //安装 JDK 8 或者： sudo apt install openjdk-8-jre-headless sudo apt install openjdk-8-jdk-headless 来源： CSDN 作者：东乡斗士链接： https://blog.csdn.net/lirenjun_2006/article/details/103635885

Removing broken packages in Ubuntu

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问题 There was an error when I tried to remove a package, so it was left in a broken state. I tried the following: sudo dpkg --remove --force-remove-reinstreq rvm Output: (Reading database ... 41743 files and directories currently installed.) Removing rvm (1.29.3-1) ... bash: rvm: command not found dpkg: error processing package rvm (--purge): subprocess installed pre-removal script returned error exit status 127 Errors were encountered while processing: rvm . sudo dpkg --purge rvm Output: same as

Ubuntu 安装Nginx的APT源

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使用apt安装nginx时，默认是Ubuntu自带的源，版本并不是最新的。可以使用Ubuntu社区爱好者维护源，地址： https://launchpad.net/~nginx/+archive/ubuntu/stable 。安装方法很简单： sudo add-apt-repository ppa:nginx/stable sudo apt-get update 然后安装nginx即可： apt-get install nginx 来源： https://www.cnblogs.com/gao88/p/12006519.html

linux系统的sudo apt-get命令大全

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> APT的使用（Ubuntu Linux软件包管理工具一） apt-cache search # ------(package 搜索包) apt-cache show #------(package 获取包的相关信息，如说明、大小、版本等) sudo apt-get install # ------(package 安装包)sudo apt-get install # -----(package - - reinstall 重新安装包) sudo apt-get -f install # -----(强制安装?#"-f = --fix-missing"当是修复安装吧...) sudo apt-get remove #-----(package 删除包) sudo apt-get remove - - purge # ------(package 删除包，包括删除配置文件等) sudo apt-get autoremove --purge # ----(package 删除包及其依赖的软件包+配置文件等（只对6.10有效，强烈推荐）) sudo apt-get update #------更新源 sudo apt-get upgrade #------更新已安装的包 sudo apt-get dist

Could not find method apt()

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问题 I'm trying to work with Dagger2, I am using Android studio 2.2.2 but I have an error with gradle: Error:(34, 0) Could not find method apt() for arguments [com.google.dagger:dagger-compiler:2.6] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler. <a href="openFile:C:\Users\edi.bershatsky\Google Drive\Android\eWave\MyCode\MyDagger2\app\build.gradle">Open File</a> please help me to understand what is wrong with my gradle this is my project gradle: //

Generating equals / hashcode / toString using annotation

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问题 I believe I read somewhere people generating equals / hashcode / toString methods during compile time (using APT) by identifying which fields should be part of the hash / equality test. I couldn't find anything like that on the web (I might have dreamed it ?) ... That could be done like that : public class Person { @Id @GeneratedValue private Integer id; @Identity private String firstName, lastName; @Identity private Date dateOfBirth; //... } For an entity (so we want to exlude some fields,

Why don't these apt-packages behave the same on Ubuntu and Heroku?

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问题 I want to use ZBar from Python on Heroku. On a regular Ubuntu 14.04 server I can run either sudo apt-get install python-qrtools -- OR -- sudo apt-get install zbar-tools sudo apt-get install libzbar-dev sudo apt-get install python-zbar After either the first, or the last three I can do an import zbar from Python. So using heroku-buildpack-apt (in combination with heroku-buildpack-multi) I tried both options. In both cases it seems to install everything correctly without errors (see

ubuntu中apt使用以及centos中yum的使用

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centos和ubuntu是两大linux主流阵营在centos中下载安装软件的方式 rpm rpm命令是RPM软件包的管理工具。rpm原本是Red Hat Linux发行版专门用来管理Linux各项套件的程序，由于它遵循GPL规则且功能强大方便，因而广受欢迎。逐渐受到其他发行版的采用。RPM套件管理方式的出现，让Linux易于安装，升级，间接提升了Linux的适用度。 -a：查询所有套件； -b<完成阶段><套件档>+或-t <完成阶段><套件档>+：设置包装套件的完成阶段，并指定套件档的文件名称； -c：只列出组态配置文件，本参数需配合"-l"参数使用； -d：只列出文本文件，本参数需配合"-l"参数使用； -e<套件档>或--erase<套件档>：删除指定的套件； -f<文件>+：查询拥有指定文件的套件； -h或--hash：套件安装时列出标记； -i：显示套件的相关信息； -i<套件档>或--install<套件档>：安装指定的套件档； -l：显示套件的文件列表； -p<套件档>+：查询指定的RPM套件档； -q：使用询问模式，当遇到任何问题时，rpm指令会先询问用户； -R：显示套件的关联性信息； -s：显示文件状态，本参数需配合"-l"参数使用； -U<套件档>或--upgrade<套件档>：升级指定的套件档； -v：显示指令执行过程； -vv：详细显示指令执行过程

How to circumvent “apt-key output should not be parsed”?

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问题 I'm automating my Docker installation. Something like this: if apt-key fingerprint 0EBFCD88 | grep "Key fingerprint = 9DC8 5822 9FC7 DD38 854A E2D8 8D81 803C 0EBF CD88" > /dev/null then # proceed fi This worked fine in older versions of apt-key , but recent versions have two issues: A different output format: I can hack around that A warning: Warning: apt-key output should not be parsed (stdout is not a terminal) Clearly, I can hack around this as well, just redirect stderr to /dev/null . It