1. 安裝centos7,啟動影象化介面。

參考:https://blog.csdn.net/qq_23014435/article/details/74347925

# systemctl get-default //獲取當前系統啟動模式

更改模式命令：systemctl set-default graphical.target由命令列模式更改為圖形介面模式

                         systemctl set-default multi-user.target由圖形介面模式更改為命令列模式

重啟機器獲得想要的啟動介面。

2. centos7 安裝samba

參考：https://www.cnblogs.com/hnxxcxg/p/6841778.html

  關閉防火牆：systemctl disable firewalld.service

  or  新增防火牆規則: firewall-cmd --permanent --zone=public --add-service=samba

        firewall-cmd --reload

關閉selinux: vim /etc/selinux/config   設定：SELINUX=disabled

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3.安裝arm-linux-gcc 

將 壓縮包  tar zxvf xxx.tar  -C / 解壓到根目錄下

在  /root/.bashrc 下新增  export PATH=$PATH:/usr/local/arm/x.x.x/bin

source /root/.bashrc

4.安裝arm  linux gdb server.

解壓 tar zxvf  xxx.tar.gz

cd  arm-gdb-x.x

./buildall

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第三步第四步，比較老的方式，新的方式參見：GNU  MCU Eclipse

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https://gnu-mcu-eclipse.github.io/toolchain/arm/install/

3.介紹一下 xpm package manager

https://www.npmjs.com/package/xpm

xpm is a Node.js CLI application to manage xPacks.

xPacks are general purpose software C/C++ packages, intended to enhance code sharingand reusing during the development of C/C++ libraries and applications, much the same as npm modules do so nicely in the JavaScript ecosystem.

Xpacks類似於 javascript 生態圈的 npm ，旨在提高C/C++ 包管理，程式碼分享的效率和程式碼的重用性。

 4.如何在linux 系統上安裝xpm 包管理工具呢？

       首先逃不開的還是要linux系統上安裝npm 包管理工具，然後用npm 去安裝xpm----OMG!!!。

       https://www.digitalocean.com/community/tutorials/how-to-install-node-js-on-a-centos-7-server

       (1) 安裝 node.js

        這裡我們不用原始碼安裝的方式，也不採用預編譯的包的方式 而是採用最簡單的

       ###############坑###########  EPEL Repository 不是最新版本的 nodejs##########

         Install a Package from the EPEL Repository

          sudo yum install epel-release

          sudo yum install nodejs

      ###############################坑############################改用 預編譯包的形式

       下載 LTS 版本的  https://nodejs.org/download/release/latest-dubnium/

         sudo tar --strip-components 1 -xzvf node-v* -C /usr/local

         檢查nodejs 版本

         node --version

          v10.14.2

        （2）安裝 xpm  參考: https://www.npmjs.com/package/xpm   

   $ mkdir -p "${HOME}"/Library/npm
   $ npm config set prefix "${HOME}"/Library/npm $ echo 'export PATH="${HOME}"/Library/npm/bin:${PATH}' >> "${HOME}"/.profile $ source "${HOME}"/.profile
 
 npm install --global xpm

         檢查 xpm 版本

       xpm --version

        0.4.5

        (3) 利用xpm 安裝交叉工具鏈

             參考：https://gnu-mcu-eclipse.github.io/toolchain/arm/install/

           xpm install --global @gnu-mcu-eclipse/arm-none-eabi-gcc

          牆內速度比較慢: 參考github主頁 https://github.com/gnu-mcu-eclipse/arm-none-eabi-gcc/releases

    去github主頁下載下來手動安裝方法：

GNU/Linux

The GNU/Linux versions of GNU MCU Eclipse ARM Embedded GCC are packed as .tgz archives. Download the latest version named like:

• gnu-mcu-eclipse-arm-none-eabi-gcc-7.2.1-1.1-20180401-0515-centos64.tgz
• gnu-mcu-eclipse-arm-none-eabi-gcc-7.2.1-1.1-20180401-0515-centos32.tgz

As the name implies, the binaries were created on CentOS, but can be executed on most recent GNU/Linux distributions (they were tested on Debian, Ubuntu, Manjaro, SuSE and Fedora). Select the -centos64 file for 64-bit machines and the -centos32 file for 32-bit machines.

To install the toolchain, unpack the archive and copy it to /${HOME}/opt/gnu-mcu-eclipse/arm-none-eabi-gcc/:

$ mkdir -p "${HOME}"/opt $ cd "${HOME}"/opt $ tar xf ~/Downloads/gnu-mcu-eclipse-arm-none-eabi-gcc-7.2.1-1.1-20180401-0515-debian64.tgz $ chmod -R -w "${HOME}"/opt/gnu-mcu-eclipse/arm-none-eabi-gcc/7.2.1-1.1-20180401-0515

測試是否安裝成功的方法：

$ "${HOME}"/opt/gnu-mcu-eclipse/arm-none-eabi-gcc/7.2.1-1.1-20180401-0515/bin/arm-none-eabi-gcc --version arm-none-eabi-gcc (GNU MCU Eclipse ARM Embedded GCC, 64-bit)