# 系统相关配置

***

## 1. 新版MacOS允许任何源安装或运行

```bash
zhaojun@zhaojun-macOS ~ $ sudo spctl --master-disable
```

## 2. winrar破解

文件名：`rareg.key`

```bash
RAR registration dataFederal Agency for Education1000000 PC usage licenseUID=b621cca9a84bc5deffbf6412612250ffbf533df6db2dfe8ccc3aae5362c06d54762105357d5e3b1489e751c76bf6e0640001014be50a52303fed29664b0741457e567d04159ad8defc3fb6edf32831fd1966f72c21c0c53c02fbbb2f91cfca671d9c482b11b8ac3281cb21378e85606494da349941fae9ee328f12dc73e90b6356b921fbfb8522d6562a6a4b97e8ef6c9ffb866be1e3826b5aa126a4d2bfe9336ad63003fc0e71c307fc2c6064416495d4c55a0cc82d402110498da970812063934815d81470829275
```

## 3. ubuntu设置路由重启生效

文件名：`/etc/rc.local`

```bash
#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.
route add -net 10.188.0.0/16 gw 182.125.102.1
exit 0
```

## 4. install Atom in Ubuntu via PPA

* Add PPA

```bash
sudo add-apt-repository ppa:webupd8team/atom
```

* Update and install Atom editor

```bash
sudo apt update; sudo apt install atom
```

* (Optional) To remove Atom text editor

```bash
sudo apt remove --purge atom
```

## 5. install Python in Ubuntu

```bash
sudo apt-get install build-essential checkinstall
sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev

version=2.7.14
cd ~/Downloads/
wget https://www.python.org/ftp/python/$version/Python-$version.tgz

tar -xvf Python-$version.tgz
cd Python-$version

./configure
make
sudo checkinstall
```

## 6. 安装/卸载 .deb 文件

安装/卸载 .deb 文件

```
sudo dpkg -i 软件包名.deb

sudo apt-get remove 软件包名
```

## 7. Ubuntu 16.04安装Java JDK

> Java JDK有两个版本，一个开源版本Openjdk，还有一个oracle官方版本jdk。下面记录在Ubuntu 16.04上安装Java JDK的步骤。

### 1) 安装openjdk

* 更新软件包列表

```bash
$ sudo apt-get update
```

* 安装openjdk-8-jdk

```bash
$ sudo apt-get install openjdk-8-jdk
```

* 查看java版本

```bash
$ java -version
openjdk version "1.8.0_131"
OpenJDK Runtime Environment (build 1.8.0_131-8u131-b11-2ubuntu1.16.04.3-b11)
OpenJDK 64-Bit Server VM (build 25.131-b11, mixed mode)0
```

### 2) 安装oracle Java JDK

* 首先，安装依赖包

```bash
$ sudo apt-get install python-software-properties
```

* 添加仓库源

```bash
$ sudo add-apt-repository ppa:webupd8team/java
```

* 更新软件包列表

```bash
$ sudo apt-get update
```

* 安装java JDK

```
$ sudo apt-get install oracle-java8-installer
```

* 如果你同时安装了以上两个版本，你可以自由的在这两个版本之间切换。

```bash
$ sudo update-alternatives --config java
```

* 前面带星号的是当前正在使用的java版本，键入编号选择使用哪个版本。编辑`.bashrc`，在文件尾添加java环境变量：

```bash
$ sudo vim .bashrc
```

* 如果使用oracle java

```bash
export JAVA_HOME="/usr/lib/jvm/java-8-oracle"
```

* 如果使用openjdk

```bash
export JAVA_HOME="/usr/lib/jvm/java-8-openjdk-amd64"
```

## 8. Ubuntu ProxyChains使用方法

* 安装ProxyChains

```bash
$ sudo apt install proxychains
```

* 启动Shawdowsocks，并连接
* 编辑/etc/proxychains.conf，在最后的ProxyList里加入Shawdowsocks的代理设置：

```bash
$ sudo vim /etc/proxychains.conf
socks5    127.0.0.1    1080
```

* 编辑/usr/bin/proxychains修改 `LD_PRELOAD=libproxychains.so.3`为（根据自己系统里的libproxychains.so.3设置）

```bash
LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libproxychains.so.3
```

* 使用方法，只需要在运行程序的命令前加上proxychains即可。以Dropbox为例，在命令行环境下运行：

```bash
proxychains dropbox start -i
```

> 优点：ProxyChains只会影响指定运行程序

## 9. Ubuntu设置超级密码

```bash
$ sudo passwd
Password: <---输入安装时的密码
Enter new UNIX password: <---新的Root用户密码
Retype new UNIX passord: <---重复新的Root用户密码
passwd: 已成功更新密码
```

## 10. 查看Ubuntu版本

```bash
$ sudo lsb_release -a
$ uname -r
$ df -hl   <----文件系统
```

## 11. Ubuntu设置SSH

```bash
$ sudo apt-get install openssh-server
$ sudo ps -e |grep ssh
$ sudo service ssh start
```


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