apt | 易学教程

maven-processor-plugin to ignore undefined symbols

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问题 I've JPA 2 maven project and I want to process sources to have the static meta model. What I did I took JBoss' static meta model processor and set it up to run during generate-sources phase. Now, obviously I have some classes that reference the meta model and compilation itself goes fine. But maven-processor-plugin itself generates errors complaining that it can't find symbols from meta model like this: [INFO] --- maven-processor-plugin:2.2.4:process (process) @ ng-grid-java --- [ERROR]

How do I remove debian packages using python apt API

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问题 I'm was trying this on Linux mint. I have been researching on how to remove packages using the python-apt API. The piece of code below was all I could come up with but nothing happens when I run it. I am trying to remove a single package right now but later I would like to remove a list of packages from a text file. I tried to use the answer found in this post and re-engineered it for removing but my logic does not work. Please give me some input. #!/usr/bin/env python # aptuninnstall.py

apt-get install specific version with non-cadidate dependencies

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问题 I want to build a debian package, which has a Build-Depends field and in it there is specific version of a library. I used to do mk-build-deps -i and then dpkg-builpackage , but I run into troubles when I specify specific version of a build depedency. I have build a minimal repeatable example: docker run -it --rm debian:jessie bash apt-get update && apt-get install -y devscripts mkdir -p /foo/debian cd foo/ echo "foo (1.0.0) UNRELEASED; urgency=medium * Initial release. (Closes: #XXXXXX) --

How to restore after accidentally apt-get remove python

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问题 Yeah. I've done this. It was stupid. I did not know it's going to pull its dependencies with it, only wanted to install python 2 and 3 from scratch (because of this problem: https://askubuntu.com/questions/897355/how-to-change-default-idle-for-python). Now, I can still use my terminal, checked these answers: https://askubuntu.com/questions/741265/apt-get-remove-python-150mb-apt-get-install-python-687kb https://askubuntu.com/questions/437644/i-accidentaly-did-sudo-apt-get-remove-python However

What is the -y flag used for in apt-get install? [closed]

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问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed last year . What does the -y flag do when you're running apt-get install ? Example, from https://nodejs.org/en/download/package-manager/#debian-and-ubuntu-based-linux-distributions: sudo apt-get install -y nodejs 回答1: It skips the confirmation of the installation. When you install a package, Ubuntu asks for confirmation (Y/N)

apt warning: no annotation processor found

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问题 I am just teaching myself about web services right now and trying to run a helloWorld. I think that to setup all of the web service stuff I need to run apt. I am running it like this: apt HelloImpl.java -classpath /<path>/jsr181-api.jar But I am getting a warning (see below). Do I need to specify an annotation processor too? I think that the apt command is supposed to generate several files but that is not happening (just generating a .class file). Thanks for the help. Warning: warning: No

Ubuntu16.04下安装Docker与docker-compose

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什么是Docker Docker 是一个开源的应用容器引擎，基于 Go语言并遵从 Apache2.0 协议开源 Docker 可以让开发者打包他们的应用以及依赖包到一个轻量级,可移植的容器中,然后发布到任何流行的 Linux 机器上,也可以实现虚拟化容器是完全使用沙箱机制，相互之间不会有任何接口（类似 iPhone 的 app）,更重要的是容器性能开销极低 Docker的应用场景 Web 应用的自动化打包和发布。自动化测试和持续集成、发布。在服务型环境中部署和调整数据库或其他的后台应用。从头编译或者扩展现有的 OpenShift 或 Cloud Foundry 平台来搭建自己的 PaaS 环境 Docker的优点 Docker 是一个用于开发，交付和运行应用程序的开放平台借助 Docker，您可以与管理应用程序相同的方式来管理基础架构。通过利用 Docker 的方法来快速交付，测试和部署代码，您可以大大减少编写代码和在生产环境中运行代码之间的延迟 Docker的基本概念 1. 镜像操作系统分为内核和用户空间。对于 Linux 而言，内核启动后，会挂载 root 文件系统为其提供用户空间支持。而Docker镜像 (Image)，就相当于是一个 root 文件系统。Docker 镜像是一个特殊的文件系统，除了提供容器运行时所需的程序、库、资源、配置等文件外

树莓派OpenCV测试

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一、基本配置 ##确认是否打开了摄像头 vcgencmd get_camera ##给pip换源 sudo mkdir ~/.pip cd .pip sudo vim pip.conf [global] timeout = 10 index-url = http://mirrors.aliyun.com/pypi/simple/ extra-index-url= http://pypi.douban.com/simple/ [install] trusted-host= mirrors.aliyun.com pypi.douban.com 二、安装 Python2直接装 sudo apt install libopencv-dev sudo apt install python-opencv ##验证openCV # pi @ raspberrypi in ~ [11:50:30] $ python Python 2.7.16 (default, Oct 10 2019, 22:02:15) [GCC 8.3.0] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import cv2 >>> cv2.__version__ '3.2.0' >>> >>>

Fail to install gcc-4.9 in ubuntu17.04

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问题 While trying to build llvm 3.4 from source on Ubuntu 17.04 , I have encountered some problems related to gcc 6.3 (described here), so I want to use gcc-4.9 . However, when I run from terminal: sudo apt install gcc-4.9 --fix-missing I get the following error: Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: cpp-4.9 gcc-4.9-base libasan1 libcloog-isl4 libgcc-4.9-dev Suggested packages: gcc-4.9-locales

Fail to install gcc-4.9 in ubuntu17.04

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