Linux开发环境配置及shell script
来源：互联网 发布：蜂云网络 编辑：程序博客网 时间：2024/06/06 09:28
本文主要是以快速搭建环境为目标学习shell script。
转自https://hceng.cn/
之前写过一个Linux嵌入式开发环境搭建的博客，后面每次搭环境都翻来复制上面的代码。感觉就像记事本一样，还是有点用，这也是写博客的一点动力吧。
用了Linux也有段时间了，它的魅力也逐渐展现出来了。以前还在熟悉Linux命令的过程中，shell script就是个老虎，觉得没接触过，害怕，每次都绕开它。
直到这周遇到了ti的SDK，尝试一边百度，一边测它的脚本，感觉有点小入门了，于是想练习下。想到每次搭建环境重复操作的痛点，就拿它开刀吧。
0.环境搭建的几个方面
根据过去的经验，用虚拟机装好Ubuntu后，一般会做这样几个步骤：
1.安装vmware tools,以便复制粘贴和文件共享；
2.更新软件源，以便更快的下载软件；
3.安装及配置常用软件，比如：
3-1.安装git,方面后续的一些安装；
3-2.安装vim和简单配置；
3-3.安装ftp和简单配置；
3-4.安装ftp和简单配置；
3-5.安装samba和简单配置；
3-6.安装tmux、htop等；
4.安装开发所需的 g++等工具、库；
除了第一步，其它都计划用脚本实现。
厌烦了每次编辑了驱动都要拖进Linux主机进行编译，然后还得复制到开发板。
重新打造了工作流，只需三步：
编辑->make->insmod 
1.检测当前环境
- 在运行脚本前，需要检测一些东西：
1.1检测网络状态
- 如果不能联网，后续的没必要做了。之前想过自动检测修复网络的，但想了想，网络的情况比较多，暂时搁置。而且刚装好虚拟机肯定是联网的，如果不能联网肯定是虚拟机设置的问题，也不是脚本能解决的。
为了方便打印更改用户名，这里先设置几个变量：
#define echo print color.RED_COLOR='\E[1;31m' PINK_COLOR='\E[1;35m' YELOW_COLOR='\E[1;33m' BLUE_COLOR='\E[1;34m' GREEN_COLOR='\E[1;32m' END_COLOR='\E[0m' #set linux host user name.user_name=hceng- 检测网络函数：
check_network() { ping -c 1 www.baidu.com > /dev/null 2>&1 if [ $? -eq 0 ];then echo -e "${GREEN_COLOR}Network ok.${END_COLOR}" else echo -e "${RED_COLOR}Network failure!${END_COLOR}" exit 1 fi}- 先ping一次百度，能够ping通就表示网络没问题。
1.2检测是否是root用户
- 很多操作都需要root权限，因此必须使用root用户权限运行脚本，这里先检测是否是root用户：
# Check user must root.check_root() { if [ $(id -u) != "0" ]; then echo -e "${RED_COLOR}Error: You must be root to run this script, please use root.${END_COLOR}" exit 1 fi}1.3检测设置的用户是否存在
- 现在用的用户名是hceng，后面为了方便其它用户使用，所以在前面定义了个变量，改变变量就可以修改用户。但为了防止设置的用户在系统中不存在，这里需要进行检测。
# Check set linux host user name.check_user_name() { cat /etc/passwd|grep $user_name if [ $? -eq 0 ];then echo -e "${GREEN_COLOR}Check the set user name OK.${END_COLOR}" else echo -e "${RED_COLOR}Check the set user name failure!${END_COLOR}" exit 1 fi}1.4检测运行结果
- 为检测某些命令，是否运行正常。
check_status() { ret=$? if [ "$ret" -ne "0" ]; then echo -e "${RED_COLOR}Failed setup, aborting..${END_COLOR}" exit 1 fi}1.5获取系统版本信息
- 后面更新源和装某些软件需要当前Ubuntu的版本代号。
# Get the code name of the Linux host release to the caller.get_host_type() { local __host_type=$1 local the_host=`lsb_release -a 2>/dev/null | grep Codename: | awk {'print $2'}` eval $__host_type="'$the_host'"}2.更新软件源
- 这里使用了阿里、网易和官方的三个源，应该没问题了。
修改配置文件的原则就是先备份再修改。同时为了防止脚本再次运行覆盖掉备份，还需要检测是否已经存在了备份。
#This function will update the source of the software.update_software_source() { local back_file=/etc/apt/sources.list.backup if [ ! -e "$back_file" ];then cp /etc/apt/sources.list $back_file fi check_status get_host_type host_release check_status echo \ "#Ali source. deb-src http://archive.ubuntu.com/ubuntu $host_release main restricted deb http://mirrors.aliyun.com/ubuntu/ $host_release main restricted deb-src http://mirrors.aliyun.com/ubuntu/ $host_release main restricted multiverse universe deb http://mirrors.aliyun.com/ubuntu/ $host_release-updates main restricted deb-src http://mirrors.aliyun.com/ubuntu/ $host_release-updates main restricted multiverse universe deb http://mirrors.aliyun.com/ubuntu/ $host_release universe deb http://mirrors.aliyun.com/ubuntu/ $host_release-updates universe deb http://mirrors.aliyun.com/ubuntu/ $host_release multiverse deb http://mirrors.aliyun.com/ubuntu/ $host_release-updates multiverse deb http://mirrors.aliyun.com/ubuntu/ $host_release-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ $host_release-backports main restricted universe multiverse deb http://archive.canonical.com/ubuntu $host_release partner deb-src http://archive.canonical.com/ubuntu $host_release partner deb http://mirrors.aliyun.com/ubuntu/ $host_release-security main restricted deb-src http://mirrors.aliyun.com/ubuntu/ $host_release-security main restricted multiverse universe deb http://mirrors.aliyun.com/ubuntu/ $host_release-security universe deb http://mirrors.aliyun.com/ubuntu/ $host_release-security multiverse #Netease source. deb http://mirrors.163.com/ubuntu/ $host_release main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ $host_release-security main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ $host_release-updates main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ $host_release-proposed main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ $host_release-backports main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ $host_release main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ $host_release-security main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ $host_release-updates main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ $host_release-proposed main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ $host_release-backports main restricted universe multiverse #Official source deb http://archive.ubuntu.com/ubuntu/ $host_release main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ $host_release-security main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ $host_release-updates main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ $host_release-proposed main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ $host_release-backports main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ $host_release main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ $host_release-security main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ $host_release-updates main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ $host_release-proposed main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ $host_release-backports main restricted universe multiverse" \ > /etc/apt/sources.list check_status #apt-get update 1>/dev/null apt-get update check_status echo -e "${GREEN_COLOR}Update source completed.${END_COLOR}" }3.安装软件及配置
- 软件主要包括自己一般常用的软件，像vim、tmux、samba等。还有就是开发所需的g++、各种库。
其中git要在vim前面，因为vim需要git下载。
# Execute an action.FA_DoExec() { echo -e "${BLUE_COLOR}==> Executing: '${@}'.${END_COLOR}" eval $@ || exit $?}# Install list software.install_software() { local install_software_list=("git" "vim" "tmux" "htop" "vsftpd" "openssh-server" "nfs-kernel-server" "portmap" "samba") echo -e "${PINK_COLOR}install_software_list:${install_software_list[*]}.${END_COLOR}" #install git if (echo "${install_software_list[@]}" | grep -wq "git");then apt-get -y install git && echo -e "${BLUE_COLOR}git install completed.${END_COLOR}" fi #install and configure vim if (echo "${install_software_list[@]}" | grep -wq "vim");then apt-get -y install vim && vim_configure && echo -e "${BLUE_COLOR}vim install completed.${END_COLOR}" fi #install tmux if (echo "${install_software_list[@]}" | grep -wq "tmux");then apt-get -y install tmux && echo -e "${BLUE_COLOR}tmux install completed.${END_COLOR}" fi #install htop if (echo "${install_software_list[@]}" | grep -wq "htop");then apt-get -y install htop && echo -e "${BLUE_COLOR}htop install completed.${END_COLOR}" fi #install and configure vsftpd if (echo "${install_software_list[@]}" | grep -wq "vsftpd");then apt-get -y install vsftpd && ftp_configure && echo -e "${BLUE_COLOR}vsftpd install completed.${END_COLOR}" fi #install openssh-server if (echo "${install_software_list[@]}" | grep -wq "openssh-server");then apt-get -y install openssh-server && echo -e "${BLUE_COLOR}openssh-server install completed.${END_COLOR}" fi #install and configure nfs-kernel-server if (echo "${install_software_list[@]}" | grep -wq "nfs-kernel-server");then apt-get -y install nfs-kernel-server && nfs_configure && \ /etc/init.d/nfs-kernel-server restart && echo -e "${BLUE_COLOR}nfs-kernel-server install completed.${END_COLOR}" fi #install portmap if (echo "${install_software_list[@]}" | grep -wq "portmap");then apt-get -y install portmap && echo -e "${BLUE_COLOR}portmap install completed.${END_COLOR}" fi #install and configure samba if (echo "${install_software_list[@]}" | grep -wq "samba");then apt-get -y install samba && samba_configure && echo -e "${BLUE_COLOR}samba install completed.${END_COLOR}" fi #others get_host_type host_release FA_DoExec apt-get -y install \ gnupg flex bison gperf build-essential \ zip curl libc6-dev libncurses5-dev libncurses5-dev:i386 x11proto-core-dev \ libx11-dev:i386 libreadline6-dev:i386 \ libgl1-mesa-glx-lts-$host_release:i386 libgl1-mesa-dev-lts-$host_release \ g++-multilib mingw32 tofrodos libncurses5-dev:i386 \ python-markdown libxml2-utils xsltproc zlib1g-dev:i386 if [ ! -h /usr/lib/i386-linux-gnu/libGL.so ]; then FA_DoExec ln -s /usr/lib/i386-linux-gnu/mesa/libGL.so.1 \ /usr/lib/i386-linux-gnu/libGL.so fi # Development support FA_DoExec apt-get -y install \ dos2unix minicom gawk echo -e "${GREEN_COLOR}software install completed.${END_COLOR}"}3.1配置vim
- vim的配置文件来自GitHub的Amir,我就不重复造轮子了。
这里只是先clone下来，然后执行安装脚本。这里值得一提的是执行脚本要指定用户运行，不然会以root用户的路径设置，导致脚本运行错误。
# Configure vim form github.vim_configure() { git clone --depth=1 https://github.com/amix/vimrc.git /home/$user_name/.vim_runtime touch /home/$user_name/.vim_runtime/my_configs.vim echo ":set number" > /home/$user_name/.vim_runtime/my_configs.vim chown -R $user_name /home/$user_name/.vim_runtime chmod u+x /home/$user_name/.vim_runtime/install_awesome_vimrc.sh su - $user_name -s /home/$user_name/.vim_runtime/install_awesome_vimrc.sh}3.2配置ftp
- FTP主要是修改为可写。在使用MobaXterm SSH登陆后，可以直接通过左边的Sftp进行文件的传输，貌似这个可以不用配置了。
# Configure ftp.ftp_configure() { sed -i 's/#loacl_enable=YES/loacl_enable=YES/g' /etc/vsftpd.conf sed -i 's/#write_enable=YES/write_enable=YES/g' /etc/vsftpd.conf}3.3配置nfs
- 在前面的工作流中，开发板直接运行Linux主机中交叉编译好的模块，是通过nfs实现的。因此需要开发板开机后就挂载nfs.
习惯在Linux主机中单独开辟一个路径作为工作目录，因此这里是设置的整个工作目录。
# Configure nfs.nfs_configure() { local work_file=/work if [ ! -d "$work_file" ];then mkdir /work fi check_status grep "/work" /etc/exports 1>/dev/null if [ $? -ne 0 ];then sed -i '$a\/work *(rw,sync,no_root_squash,no_subtree_check)' /etc/exports fi}3.4配置samba
- samba也是实现前面工作流不可确少的一环。这样就不用每次修改代码后，通过ftp上传到Linux主机。
samba在Windows上的使用是：
先Windows+r，打开命令窗口，
然后输入：\\192.168.1.xx，
最后建议右键，映射网络驱动，方面后续打开。
测试中需要重启生效。
# Configure samba.samba_configure() { local back_file=/etc/samba/smb.conf.bakup if [ ! -e "$back_file" ];then cp /etc/samba/smb.conf $back_file fi check_status grep "/work" /etc/samba/smb.conf 1>/dev/null if [ $? -ne 0 ];then sed -i \ '$a[share_work]\n\ path = \/work\n\ available = yes\n\ public = yes\n\ guest ok = yes\n\ read only = no\n\ writeable = yes\n' /etc/samba/smb.conf fi /etc/init.d/samba restart chmod -R 777 /work}4.完整代码及心得
完整代码链接
#!/bin/bash# -------------------------------------------------------------------------------# Filename: setup_ubuntu_host_env.sh# Revision: 1.0# Date: 2017/08/05# Author: hceng# Email: huangcheng.job@foxmail.com# Website: www.hceng.cn# Function: setup ubuntu host env.# Notes: learn# -------------------------------------------------------------------------------## Description: #1.check env.#1.1 check network #1.2 check use root #1.3 check set name #1.4 configure samba #2.update software sourcev. #3.install vim tmux htop ftp ssh nfs samba.#3.1 configure vim #3.2 configure ftp #3.3 configure nfs #3.4 configure samba #4.install system tool eg:g++ ...## -------------------------------------------------------------------------------#define echo print color.RED_COLOR='\E[1;31m' PINK_COLOR='\E[1;35m' YELOW_COLOR='\E[1;33m' BLUE_COLOR='\E[1;34m' GREEN_COLOR='\E[1;32m' END_COLOR='\E[0m' #Set linux host user name.user_name=hceng# Check network.check_network() { ping -c 1 www.baidu.com > /dev/null 2>&1 if [ $? -eq 0 ];then echo -e "${GREEN_COLOR}Network OK.${END_COLOR}" else echo -e "${RED_COLOR}Network failure!${END_COLOR}" exit 1 fi}# Check user must root.check_root() { if [ $(id -u) != "0" ]; then echo -e "${RED_COLOR}Error: You must be root to run this script, please use root.${END_COLOR}" exit 1 fi}# Check set linux host user name.check_user_name() { cat /etc/passwd|grep $user_name if [ $? -eq 0 ];then echo -e "${GREEN_COLOR}Check the set user name OK.${END_COLOR}" else echo -e "${RED_COLOR}Check the set user name failure!${END_COLOR}" exit 1 fi}# Check the results of the operation.check_status() { ret=$? if [ "$ret" -ne "0" ]; then echo -e "${RED_COLOR}Failed setup, aborting..${END_COLOR}" exit 1 fi}# Get the code name of the Linux host release to the caller.get_host_type() { local __host_type=$1 local the_host=`lsb_release -a 2>/dev/null | grep Codename: | awk {'print $2'}` eval $__host_type="'$the_host'"}#This function will update the source of the software.update_software_source() { local back_file=/etc/apt/sources.list.backup if [ ! -e "$back_file" ];then cp /etc/apt/sources.list $back_file fi check_status get_host_type host_release check_status echo \ "#Ali source. deb-src http://archive.ubuntu.com/ubuntu $host_release main restricted deb http://mirrors.aliyun.com/ubuntu/ $host_release main restricted deb-src http://mirrors.aliyun.com/ubuntu/ $host_release main restricted multiverse universe deb http://mirrors.aliyun.com/ubuntu/ $host_release-updates main restricted deb-src http://mirrors.aliyun.com/ubuntu/ $host_release-updates main restricted multiverse universe deb http://mirrors.aliyun.com/ubuntu/ $host_release universe deb http://mirrors.aliyun.com/ubuntu/ $host_release-updates universe deb http://mirrors.aliyun.com/ubuntu/ $host_release multiverse deb http://mirrors.aliyun.com/ubuntu/ $host_release-updates multiverse deb http://mirrors.aliyun.com/ubuntu/ $host_release-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ $host_release-backports main restricted universe multiverse deb http://archive.canonical.com/ubuntu $host_release partner deb-src http://archive.canonical.com/ubuntu $host_release partner deb http://mirrors.aliyun.com/ubuntu/ $host_release-security main restricted deb-src http://mirrors.aliyun.com/ubuntu/ $host_release-security main restricted multiverse universe deb http://mirrors.aliyun.com/ubuntu/ $host_release-security universe deb http://mirrors.aliyun.com/ubuntu/ $host_release-security multiverse #Netease source. deb http://mirrors.163.com/ubuntu/ $host_release main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ $host_release-security main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ $host_release-updates main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ $host_release-proposed main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ $host_release-backports main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ $host_release main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ $host_release-security main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ $host_release-updates main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ $host_release-proposed main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ $host_release-backports main restricted universe multiverse #Official source deb http://archive.ubuntu.com/ubuntu/ $host_release main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ $host_release-security main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ $host_release-updates main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ $host_release-proposed main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ $host_release-backports main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ $host_release main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ $host_release-security main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ $host_release-updates main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ $host_release-proposed main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ $host_release-backports main restricted universe multiverse" \ > /etc/apt/sources.list check_status #apt-get update 1>/dev/null apt-get update check_status echo -e "${GREEN_COLOR}Update source completed.${END_COLOR}" }# Configure vim form github.vim_configure() { git clone --depth=1 https://github.com/amix/vimrc.git /home/$user_name/.vim_runtime touch /home/$user_name/.vim_runtime/my_configs.vim echo ":set number" > /home/$user_name/.vim_runtime/my_configs.vim chown -R $user_name /home/$user_name/.vim_runtime chmod u+x /home/$user_name/.vim_runtime/install_awesome_vimrc.sh su - $user_name -s /home/$user_name/.vim_runtime/install_awesome_vimrc.sh}# Configure ftp.ftp_configure() { sed -i 's/#loacl_enable=YES/loacl_enable=YES/g' /etc/vsftpd.conf sed -i 's/#write_enable=YES/write_enable=YES/g' /etc/vsftpd.conf}# Configure nfs.nfs_configure() { local work_file=/work if [ ! -d "$work_file" ];then mkdir /work fi grep "/work" /etc/exports 1>/dev/null if [ $? -ne 0 ];then sed -i '$a\/work *(rw,sync,no_root_squash,no_subtree_check)' /etc/exports fi}# Configure samba.samba_configure() { local back_file=/etc/samba/smb.conf.bakup if [ ! -e "$back_file" ];then cp /etc/samba/smb.conf $back_file fi check_status grep "/work" /etc/samba/smb.conf 1>/dev/null if [ $? -ne 0 ];then sed -i \ '$a[share_work]\n\ path = \/work\n\ available = yes\n\ public = yes\n\ guest ok = yes\n\ read only = no\n\ writeable = yes\n' /etc/samba/smb.conf fi /etc/init.d/samba restart chmod -R 777 /work}# Execute an action.FA_DoExec() { echo -e "${BLUE_COLOR}==> Executing: '${@}'.${END_COLOR}" eval $@ || exit $?}# Install list software.install_software() { local install_software_list=\ ("git" "vim" "tmux" "htop" "vsftpd" "openssh-server" "nfs-kernel-server" "portmap" "samba") echo -e "${PINK_COLOR}install_software_list:${install_software_list[*]}.${END_COLOR}" #install git if (echo "${install_software_list[@]}" | grep -wq "git");then apt-get -y install git && echo -e "${BLUE_COLOR}git install completed.${END_COLOR}" fi #install and configure vim if (echo "${install_software_list[@]}" | grep -wq "vim");then apt-get -y install vim && vim_configure && echo -e "${BLUE_COLOR}vim install completed.${END_COLOR}" fi #install tmux if (echo "${install_software_list[@]}" | grep -wq "tmux");then apt-get -y install tmux && echo -e "${BLUE_COLOR}tmux install completed.${END_COLOR}" fi #install htop if (echo "${install_software_list[@]}" | grep -wq "htop");then apt-get -y install htop && echo -e "${BLUE_COLOR}htop install completed.${END_COLOR}" fi #install and configure vsftpd if (echo "${install_software_list[@]}" | grep -wq "vsftpd");then apt-get -y install vsftpd && ftp_configure && echo -e "${BLUE_COLOR}vsftpd install completed.${END_COLOR}" fi #install openssh-server if (echo "${install_software_list[@]}" | grep -wq "openssh-server");then apt-get -y install openssh-server && echo -e "${BLUE_COLOR}openssh-server install completed.${END_COLOR}" fi #install and configure nfs-kernel-server if (echo "${install_software_list[@]}" | grep -wq "nfs-kernel-server");then apt-get -y install nfs-kernel-server && nfs_configure && \ /etc/init.d/nfs-kernel-server restart && echo -e "${BLUE_COLOR}nfs-kernel-server install completed.${END_COLOR}" fi #install portmap if (echo "${install_software_list[@]}" | grep -wq "portmap");then apt-get -y install portmap && echo -e "${BLUE_COLOR}portmap install completed.${END_COLOR}" fi #install and configure samba if (echo "${install_software_list[@]}" | grep -wq "samba");then apt-get -y install samba && samba_configure && echo -e "${BLUE_COLOR}samba install completed.${END_COLOR}" fi #others get_host_type host_release FA_DoExec apt-get -y install \ gnupg flex bison gperf build-essential \ zip curl libc6-dev libncurses5-dev libncurses5-dev:i386 x11proto-core-dev \ libx11-dev:i386 libreadline6-dev:i386 \ libgl1-mesa-glx-lts-$host_release:i386 libgl1-mesa-dev-lts-$host_release \ g++-multilib mingw32 tofrodos libncurses5-dev:i386 \ python-markdown libxml2-utils xsltproc zlib1g-dev:i386 if [ ! -h /usr/lib/i386-linux-gnu/libGL.so ]; then FA_DoExec ln -s /usr/lib/i386-linux-gnu/mesa/libGL.so.1 \ /usr/lib/i386-linux-gnu/libGL.so fi # Development support FA_DoExec apt-get -y install \ dos2unix minicom gawk echo -e "${GREEN_COLOR}software install completed.${END_COLOR}"}check_networkcheck_rootcheck_user_nameupdate_software_sourceinstall_softwareecho -e "${GREEN_COLOR}===================================================${END_COLOR}" echo -e "${GREEN_COLOR}============setup ubuntu host env ok!==============${END_COLOR}" echo -e "${GREEN_COLOR}===================================================${END_COLOR}"su $user_nameexit 0- 就目前来看，shell脚本还不算太难。主要就是提取某个文本内容，然后做出判断，对应执行。技巧性还是蛮多的，很有乐趣。
遇到要实现某个功能，百度一下也基本有。调试的时候，能够打印出变量，或者提出局部代码进行运行测试，还是很方便的。
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