我的面试准备过程：ubuntu 使用过程记录
回到监狱般的实验室，用一台4年前的废电脑，装一个ubuntu来玩玩吧。
插播一段广告 页面下载器(我的Java爬虫之一)
https://segmentfault.com/a/1190000011881759 Xpath、Jsoup、Xsoup(我的Java爬虫之二)
https://segmentfault.com/a/1190000011918253
问题1 ubuntu 14.04 --系统的网络服务与此版本的网络管理器不兼容问题
1、sudo -s
2、cd /etc/NetworkManager/
3、ls -la
4、mv system-connections /home/<username>/ #移动目录到自己的用户目录下
5、mkdir /system-connections
6、reboot
当然，也可能是！32位的老机器，下载了64位的系统~~
问题2 锐捷上网问题
校园网下载客户端后，
cd rjsupplicant
sudo ./rjsupplicant.sh -d 0 -u username -p password
此时如果网卡消失了
cd /etc/init.d/
sudo start network-manager
问题3 搭建ssh服务器
sudo apt-get update
sudo apt-get install openssh-server
问题4 vim tab设置为四个空格
vim ~/.vimrc 添加以下内容
set ts=4
set expandtab
问题5 安装java
以安装 jdk-8u72-linux-x64.tar.gz 为例
#解压安装包：
sudo tar -zxvf jdk-8u72-linux-x64.tar.gz
mv jdk1.8.0_72/ /opt/
#配置环境变量：
#编辑配置文件：
sudo vim /etc/profile
#在该文件的最尾巴，添加下面内容：
JAVA_HOME=/opt/jdk1.8.0_72
JRE_HOME=$JAVA_HOME/jre
PATH=$PATH:$JAVA_HOME/bin
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export JAVA_HOME
export JRE_HOME
export PATH
export CLASSPATH
#执行命令，刷新该配置（必备操作）：
. /etc/profile
#检查是否使用了最新的 JDK：
java -version
安装maven
下载解压完后， vi~/.zshrc
export M2_HOME=/opt/software/apache-maven-3.5.0
export M2=$M2_HOME/bin
export PATH=$M2:$PATH
sublime中文输入问题
解决方法：
#1. 进入sublime text3 插件管理文件夹
cd ~/.config/sublime-text-3/Packages
#2. 获取InputHelper插件
git clone https://github.com/xgenvn/InputHelper.git
#如果发现在sublime text3 中无法使用ctrl+shift+z调出输入框，请检查是否安装pygtk
sudo apt-get install python-gtk2-dev
grub>
想给实验室的这台小电脑挖坑，就保持
linux (hd0,1)/vmlinuz.efi root=/dev/sda3
initrd (hd0,1)/initrd.lz
boot
不然就试试
sudo update-grub
sudo grub-install /dev/sda
好用软件系列
美观相关
安装Albert 和 Casio
sudo add-apt-repository ppa:nilarimogard/webupd8
sudo apt-get update
sudo apt-get install albert
sudo apt-get install cairo-dock
开发者相关
安装zeal
sudo apt-getinstall zeal
自己从废旧电脑里淘到一个i5-3代的cpu，从一堆2G的内存里淘到两个4G的，现在牛气哄哄地升级系统，之前真的是，一把心酸泪
升级17.04
配置apt源，校园网，用清华的吧
sudo vi/etc/apt/sources.list
# 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted universe multiverse
# 预发布软件源，不建议启用
# deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-proposed main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-proposed main restricted universe multiverse
升级！
sudodo-release-upgrade-d
升级17.04后没有声音
NVidia
The first step is to make sure that the GPU is not in use by a driver. As you're using the nvidia driver, you must also be using prime. Run prime-select query. If it outputs nvidia, you can disable the driver by running sudo prime-select intel and rebooting. If it outputs unknown then the previous step might also work, but will also break your bumblebee setup. As a sanity check, make sure that the GPU and its audio chip are powered: Login as root: sudo su Run lspci -H1 | grep 01:00. It should output two lines. If the first line ends with (rev ff), you need to power your GPU by running echo ON > /proc/acpi/bbswitch. If the second line is missing, that means that the GPU audio chip is no longer powered. You can try suspending your laptop; resume it again; and check again whether the GPU audio chip is powered (I hope that works for you, otherwise you're out of luck, like me). Run lsmod | grep nvidia again to make sure that the nvidia driver is still not in use. Now that the GPU is powered without a driver we're going to 'remove' it: Run echo 1 > /sys/bus/pci/devices/0000\:01\:00.0/remove (if the GPU still had a driver loaded/in use, this causes a kernel panic). Redetect the GPU and also its audio chip by running echo 1 > /sys/bus/pci/rescan. Run lspci | grep 01:00.1. If that outputs anything, congratulations! Your linux is now aware of your GPU audio chip. Get X running with the nvidia GPU. Run prime-select. If it outputs intel, run prime-select nvidia. Logout and back in again. If you run aplay -l now it should output the HDMI outputs (on my pc there are 4 outputs, and only 1 works).
https://askubuntu.com/a/660910
安装系统监控indicator-sysmonitor
sudo add-apt-repository ppa:fossfreedom/indicator-sysmonitor
sudo apt-get update
sudo apt-get install indicator-sysmonitor
最后在终端执行indicator-sysmonitor &即可
安装zsh
之前竟然没有放进来,装oh my zsh的前提是要装好了curl以及git
sudo apt-get install curl
sudo apt-get install git
sudo apt-get install zsh
sh -c "$(curl -fsSL https://raw.github.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"
JetBrains IDEA 系列产品通用xx方法（license server）
打开激活窗口 选择 Activate new license with License server （用license server 激活） 在 License sever address 处填入 http://xidea.online 点击 Activate 进行认证 done！
数领先机 智赢未来
DTCC2018
中国数据库技术大会（简称 DTCC）是国内数据库及大数据领域规模最大、最受欢迎的技术交流盛会，每年一届。自 2010 年以来，迄今已成功举办了八届，累计参与人次达到 20000+。DTCC 每年都将邀请百余位行业专家，就热点技术话题进行分享，为数据库人群、大数据从业人员、广大互联网人士及行业相关人士提供最具价值的交流平台。
2018 年 5 月 10-12 日，第九届中国数据库技术大会（DTCC2018）将如约而至。本届大会以 “数领先机 • 智赢未来” 为主题，设定 2 大主会场及 20 个技术专场，邀请来自国内外互联网、金融、教育等行业百余位技术专家，共同探讨 Oracle、MySQL、NoSQL、大数据、机器学习、区块链、数据可视化等领域的前瞻性热点话题与技术。
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