NOTE01

DAY01

更新源

打开终端（Ctrl+Alt+T），执行命令

sudo gedit /etc/apt/sources.list

将文本框的内容删除，粘贴以下内容,保存并退出

deb cdrom:[Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)]/ xenial main restricted
deb-src http://archive.ubuntu.com/ubuntu xenial main restricted #Added by software-properties
deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted multiverse universe #Added by software-properties
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted multiverse universe #Added by software-properties
deb http://mirrors.aliyun.com/ubuntu/ xenial universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates universe
deb http://mirrors.aliyun.com/ubuntu/ xenial multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse #Added by software-properties
deb http://archive.canonical.com/ubuntu xenial partner
deb-src http://archive.canonical.com/ubuntu xenial partner
deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted multiverse universe #Added by software-properties
deb http://mirrors.aliyun.com/ubuntu/ xenial-security universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-security multiverse

执行命令

sudo apt-get update
sudo apt-get upgrade

配置VIM

打开终端，执行命令

sudo gedit /etc/hosts

将以下两行文本添加到文本框中，保存并退出

192.30.255.112 github.com git
185.31.16.184 github.global.ssl.fastly.net

执行命令

sudo wget -qO- https://raw.github.com/ma6174/vim/master/setup.sh | sh -x

安装sshpi及scppi

sshpi.sh参考代码

#!/bin/bash

#文件名：sshpi.sh
#用途：远程连接树莓派

function Usage() {
	echo "Usage: sshpi Username@pi"
	echo "Like This：sshpi UserA@pi1"
}
if [[ ! $# -eq 1  ]]; then
	Usage
	exit
fi

echo $1 | grep "@" >/dev/zero 2>&1

if [[ ! $? -eq 0 ]]; then
	echo "argument wrong！"
	Usage
	exit
fi
Username=`echo $1 | cut -d "@" -f 1`
if [[ ${Username}x == x ]]; then
	echo "Please input your username!"
	Usage
	exit
fi
Hostname=`echo $1 | cut -d "@" -f 2`
if [[ ${Hostname}x == x ]]; then
	echo "Please input Hostname of Pi!"
	Usage
	exit
fi
echo $Hostname | grep -w "^pi[1-9][0-9]\?" >/dev/null 2>&1
if [[ ! $? -eq 0 ]]; then
	echo "Hostname is Wrong!"
	Usage
	exit
fi
HostNum=`echo $Hostname | cut -c 3-`
if [[ $HostNum -gt 22 ]]; then
	echo "Hostname is Wrong!"
	Usage
	exit
fi

port=$[6530 + $HostNum]
echo -e "\033[46;30m You Will login\033[0m\033[46;31m $Hostname\033[0m\033[46;30m with Username \033[46;31m$Username\033[0m\033[46;30m, enjoy it!\033[0m"
ssh -p $port ${Username}@zentao.haizeix.tech

scppi.sh参考代码

#!/bin/bash

#文件名：scppi.sh
#用途：远程拷贝文件，在树莓派和本机之间

function Usage() {
	echo "Usage: scppi file_or_dir Username@piname:dest_file_or_dir"
	echo "       scppi Username@piname:./file_or_dir  file_or_dir"
	echo "Like This：scppi PiHealth pi@pi1:./new"
}
if [[ ! $# -eq 2  ]]; then
	Usage
	exit
fi
#1.源
#2.目标

echo $1 | grep -q "@"

if [[ $? -eq 0 ]]; then
	remote=$1
	local=$2
else
	remote=$2
	local=$1
fi

echo $remote | grep @ | grep : >/dev/null 2>&1
if [[ ! $? -eq 0 ]]; then
	echo "argument wrong！"
	Usage
	exit
fi
Username=`echo $remote | cut -d "@" -f 1`
if [[ ${Username}x == x ]]; then
	echo "Please input your username!"
	Usage
	exit
fi
Hostname=`echo $remote | cut -d "@" -f 2 | cut -d ":" -f 1`
if [[ ${Hostname}x == x ]]; then
	echo "Please input Hostname of Pi!"
	Usage
	exit
fi
echo $Hostname | grep -w "^pi[1-9][0-9]\?" >/dev/null 2>&1
if [[ ! $? -eq 0 ]]; then
	echo "Hostname is Wrong!"
	Usage
	exit
fi
dir_file=`echo $remote | cut -d "@" -f 2 | cut -d ":" -f 2`
if [[ ${dir_file}x == x ]]; then
	echo "Please input dest_file_or_dir of Pi!"
	Usage
	exit
fi

HostNum=`echo $Hostname | cut -c 3-`

if [[ $HostNum -gt 22 ]]; then
	echo "Hostname is Wrong!"
	Usage
	exit
fi

port=$[6530 + $HostNum]
echo -e "\033[46;30m Coping \033[46;31m$1\033[46;30m to \033[46;31m$dir_file\033[46;30m on \033[46;31m$Hostname\033[46;30m with Username \033[46;31m$Username\033[46;30m, enjoy it!\033[0m"

if [[ $1 = $local ]]; then
	scp -P $port -r $1  ${Username}@zentao.haizeix.tech:$dir_file
else
	scp -P $port -r ${Username}@zentao.haizeix.tech:$dir_file $local
fi

打开终端，执行命令

vim sshpi.sh

在VIM文本框里粘贴sshpi脚本的代码，保存并退出（：wq）

将sshpi.sh重命名为sshpi,赋予sshpi脚本可执行权限

mv sshpi.sh sshpi
chmod a+x sshpi

执行命令

echo $PATH

将sshpi复制到PATH路径下

cp sshpi /bin

同样的操作生成scppi脚本

DAY02

设置免密登录

打开终端，执行命令

sshpi lws@pi3

暂时需要密码（haizei）来连接树莓派

在本机生成秘钥

ssh-keygen

将秘钥复制到authorized_keys文件中

cat .ssh/id_rsa.pub>>.ssh/authorized_keys

将本机的authorized_keys文件复制到树莓派中

scppi .ssh/authorized_keys lws@pi3

再次连接树莓派，验证是否成功

check.c

#include <stdio.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <pwd.h>

int socket_connect(int port, char *host) {
	int sockfd;
	struct sockaddr_in dest_addr;
	if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
		perror("socket() error");
		return -1;
	}

	memset(&dest_addr, 0, sizeof(dest_addr));
	dest_addr.sin_family = AF_INET;
	dest_addr.sin_port = htons(port);
	dest_addr.sin_addr.s_addr = inet_addr(host);

	if (connect(sockfd, (struct sockaddr *)&dest_addr, sizeof(dest_addr)) < 0) {
		perror("connect() error");
		return -1;
	}
	return sockfd;

}

int main() {
	int  socket_fd;
	struct passwd *pwd;
	pwd = getpwuid(getuid());
	char ip_addr[20] = "192.168.1.40";
	int port = 8888;
	char username[20] = {0};
	strcpy(username, pwd->pw_name);
	socket_fd = socket_connect(port, ip_addr);
	if (socket_fd < 0)
	{
		exit(1);
	}
	if (send(socket_fd, username, strlen(username), 0) > 0) {
		printf("Check Success\n");
	} 
	close(socket_fd);
	return 0;
}

gcc check.c -o check

VIM的简单使用

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VIM的四种模式

普通模式

命令	说明
x d dd ndd dw d$ d^ dG dnG	删除说明
y yy yG ynG y$ y^	复制
p P	粘贴
gg GG ngg	移动光标
R cc cG cnG c$ c^	替换
u ctrl+r ctrl+v	undo redo 可视块操作

插入模式

i	在光标之前追加
a	在光标之后追加
A	在一行的结尾处追加
I	在一行的开头处插入
o	在光标所在位置的下一行打开新行插入
O	在光标所在位置的上一行打开新行插入

命令模式

命令	说明
:w :q :wq :x :wq! :q!	文件的保存与退出操作
:args	显示文件名称，切换文件
:e foo.txt	打开foo.txt
:saveas ~/foo.txt	另存为~/foo.txt
:split :vsplit	切分窗口
:set	设置选项

其他使用技巧

Ctrl+z	挂起
fg	返回前台
/findstring	查找

Python的升级与tldr的升级

打开终端，执行命令

sudo apt-get install python
sudo apt-get install python3

查看Python版本

python -V
python3 -V

获取Python路径

which python

查看Python

ls -al /usr/bin/python

强制删除Python，将Python3.5指向Python

sudo rm /usr/bin/python
sudo ln /usr/bin/python3.5 /usr/bin/python

安装pyhton3-pip

sudo apt-get insatll python3-pip

升级pip

pip install --upgrade pip

pip3 list报错，解决

sudo vim /usr/bin/pip3

在文本框中pip后加上._internal

安装tldr

sudo pip install tldr

Linux极简入门

软件的安装与卸载

• apt-get update
• apt-get upgrade
• apt-get install xxx
• apt-get --purge remove xxx
• apt-cache search xxx

目录

命令	功能
cd	切换当前目录
pwd	打印当期目录工作
mkdir	创建目录

cd切换工作

• cd /etc 直接切换到/etc目录

• cd … 切换到上层目录

• cd . 切换到当前目录

• cd 回到自己的家目录

• cd ~ 回到自己的家目录

• cd - 回到上次工作目录

pwd打印当前工作目录

pwd [-LP]

• -L 显示逻辑工作目录
• -P 显示物理工作目录

mkdir创建目录

mkdir [-pm]

• ​ -p 自动创建父目录

• ​ -m 设置权限