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update codes
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‎codes/linux/soft/README.md‎

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@@ -233,3 +233,14 @@ wget -qO- https://gitee.com/turnon/linux-tutorial/raw/master/codes/linux/soft/fa
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curl -o- https://gitee.com/turnon/linux-tutorial/raw/master/codes/linux/soft/docker-install.sh | bash
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wget -qO- https://gitee.com/turnon/linux-tutorial/raw/master/codes/linux/soft/docker-install.sh | bash
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```
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## FastDFS 安装
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说明：
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使用方法：执行以下任意命令即可执行脚本。
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```sh
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curl -o- https://gitee.com/turnon/linux-tutorial/raw/master/codes/linux/soft/fastdfs-install.sh | bash
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wget -qO- https://gitee.com/turnon/linux-tutorial/raw/master/codes/linux/soft/fastdfs-install.sh | bash
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```

‎codes/linux/soft/fastdfs-install.sh‎

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@@ -47,7 +47,7 @@ nginx_version=1.16.0
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nginx_path=/opt/nginx
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printf "${GREEN}>>>>>>>> install required libs.${RESET}\n\n"
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yum install git gcc gcc-c++ make automake autoconf libtool pcre pcre-devel zlib zlib-devel openssl-devel wget vim -y
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yum install -y git gcc gcc-c++ make automake autoconf libtool pcre pcre-devel zlib zlib-devel openssl-devel wget vim unzip
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# download and decompression
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mkdir -p ${path}
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printf "${GREEN}>>>>>>>>> fastdfs 配置文件准备${RESET}\n"
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# 配置修改参考：https://github.com/happyfish100/fastdfs/wiki
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mkdir -p /etc/fdfs
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cp ${path}/fastdfs/conf/http.conf /etc/fdfs/ #供nginx访问使用
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cp ${path}/fastdfs/conf/mime.types /etc/fdfs/ #供nginx访问使用
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cp ${path}/fastdfs-nginx-module/src/mod_fastdfs.conf /etc/fdfs

‎codes/shell/demos/variable-demo.sh‎

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#!/usr/bin/env bash
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################### 声明变量 ###################
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word="hello"
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echo ${word}
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name="world"
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echo "hello ${name}"
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# Output: hello
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################### 只读变量 ###################

‎codes/shell/示例脚本/变量/变量基本使用.sh‎

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#!/usr/bin/env bash
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################### 声明变量 ###################
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name="world"
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echo "hello ${name}"
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# Output: hello world
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################### 只读变量 ###################
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readonly_var="hello"
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echo ${readonly_var}
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# Output: hello
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readonly readonly_var
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# rword="bye" # 如果放开注释，执行时会报错
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################### 删除变量 ###################
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dword="hello" # 声明变量
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echo ${dword} # 输出变量值
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# Output: hello
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unset dword # 删除变量
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echo ${dword}
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# Output: （空）

‎codes/shell/示例脚本/变量/将输出结果赋值给变量.sh‎

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#!/usr/bin/env bash
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folder=$(pwd)
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echo "current path: ${folder}"

‎codes/shell/示例脚本/变量/系统变量.sh‎

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#!/bin/bash
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echo "User info fro userId:$USER"
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echo UID:$UID
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echo HOME:$HOME

codes/shell/示例脚本/基本脚本/使用自定义变量.sh renamed to codes/shell/示例脚本/变量/自定义变量.sh

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#!/bin/bash
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#testing variables
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#!/usr/bin/env bash
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days=10
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guest="Katie"

‎codes/shell/示例脚本/字符串/字符串分割成数组.sh‎

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#!/usr/bin/env bash
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# ----------------------------------------------------------------------------------
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# 根据特定字符将一个字符串分割成数组
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# ----------------------------------------------------------------------------------
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str="0.0.0.1"
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OLD_IFS="$IFS"
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IFS="."
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array=(${str})
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IFS="$OLD_IFS"
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size=${#array[*]}
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lastIndex=`expr ${size} - 1`
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echo "数组长度：${size}"
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echo "最后一个数组元素：${array[${lastIndex}]}"
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for item in ${array[@]}
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do
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echo "$item"
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done

‎codes/shell/示例脚本/字符串/字符串基本使用.sh‎

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#!/usr/bin/env bash
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################### 单引号和双引号 ###################
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################### 拼接字符串 ###################
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# 使用单引号拼接
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name1='white'
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str1='hello, '${name1}''
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str2='hello, ${name1}'
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echo ${str1}_${str2}
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# Output:
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# hello, white_hello, ${name1}
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# 使用双引号拼接
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name2="black"
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str3="hello, "${name2}""
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str4="hello, ${name2}"
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echo ${str3}_${str4}
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# Output:
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# hello, black_hello, black
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################### 获取字符串长度 ###################
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text="12345"
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echo "${text} length is: ${#text}"
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# Output:
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# 12345 length is: 5
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################### 获取字符串长度 ###################
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text="12345"
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echo ${text:2:2}
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# Output:
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# 34
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################### 查找子字符串 ###################
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text="hello"
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echo `expr index "${text}" ll`
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# Output:
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# 3
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################### 截取关键字左边内容 ###################
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full_branch="feature/1.0.0"
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branch=`echo ${full_branch#feature/}`
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echo "branch is ${branch}"
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################### 截取关键字右边内容 ###################
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full_version="0.0.1-SNAPSHOT"
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version=`echo ${full_version%-SNAPSHOT}`
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echo "version is ${version}"
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################### 判断字符串中是否包含子字符串 ###################
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result=$(echo "${str}" | grep "feature/")
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if [[ "$result" != "" ]] ; then
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echo "feature/ 是 ${str} 的子字符串"
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else
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echo "feature/ 不是 ${str} 的子字符串"
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fi

‎codes/shell/示例脚本/数组/数组基本使用.sh‎

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#!/usr/bin/env bash
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# 创建数组
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nums=([2]=2 [0]=0 [1]=1)
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colors=(red yellow "dark blue")
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# 访问数组的单个元素
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echo ${nums[1]}
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# Output: 1
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# 访问数组的所有元素
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echo ${colors[*]}
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# Output: red yellow dark blue
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echo ${colors[@]}
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# Output: red yellow dark blue
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printf "+ %s\n" ${colors[*]}
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# Output:
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# + red
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# + yellow
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# + dark
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# + blue
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printf "+ %s\n" "${colors[*]}"
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# Output:
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# + red yellow dark blue
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printf "+ %s\n" "${colors[@]}"
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# Output:
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# + red
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# + yellow
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# + dark blue
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# 访问数组的部分元素
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echo ${nums[@]:0:2}
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# Output:
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# 0 1
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# 访问数组长度
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echo ${#nums[*]}
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# Output:
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# 3
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# 向数组中添加元素
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colors=(white "${colors[@]}" green black)
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echo ${colors[@]}
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# Output:
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# white red yellow dark blue green black
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# 从数组中删除元素
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unset nums[0]
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echo ${nums[@]}
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# Output:
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# 1 2

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