马哥博客作业第六周

本来想着这周把逻辑卷的实验做完,但要学的东西实在太多了,网络学的脑壳疼,吧第二版的reset脚本当作业吧
实际上还是有很多东西没有改完,而且整体也不美观,需要继续改进
比上一版本多的改进是

• 更新了yum源仓库两种配置 (可选基于本地光盘或者网络的)(重复执行脚本也不会出现问题)
• 更改回来了cat > << 的结束符(之前以为如果有多个追加重定向不可用同一个结束符)
• 增加了几个别名 (但有个问题并没有解决,source ~/.bashrc 只能在子进程里执行,并不能在当前进程生效,所以,需要重新退出,或手动source才可以,有待改进)

别名也搞得不好,下次试试用echo >> 把全部内容追加进去
其实主要就改进了repo源,让用户可以主动选择那种方式,下一版本要改成用户的.mailrc 的邮箱用$1 替换 ,网络的IP 也变成交互式,不然只能由一种可能,而且可以增加一个判断,如果已经由此网络那么,自动+1
还打算添加个心功能,显示主机的一些信息 主机名,版本号,内存,分区状况什么的
下周一定把逻辑卷的实验搞完
脚本看着很乱,全部完成之后,看看能不能让脚本看起来简洁些,现在自己看着都感觉乱

#!/bin/bash
#this scirpt for reset a new machine
COL=`echo -e "\e[1;$[RANDOM%7+31]m"`
END=`echo -e "\e[0m"`
echo 		     	 $COL	 "
1:install toolkits
2:setup .vimrc .mailrc \$PS1
3:setup etho firewalld 
4:setup yum.repo
		    	 $END    "
#show the Options and make random color
	

KITS="gcc make autoconf gcc-c++ glibc glibc-devel pcre pcre-devel openssl
openssl-devel systemd-devel zlib-devel  vim lrzsz tree tmux lsof tcpdump wget
net-tools iotop bc bzip2 zip unzip nfs-utils man-pages autofs "
#add anthing in $KITS to  install

    read -p"$COL Pick one (1-4) $END"  FUN
      if
        [ $FUN = 1 ] ;then
		echo $COL "please be patient it's might gonna take a while"  $END
		echo "$KITS "|xargs   yum -y install  &&
			systemctl start autofs  ; systemctl enable autofs  
#				 updatedb
                   mandb   &> /dev/null
	       	echo $COL "installed toolkits" $END
					exit 10

#install toolkits and start /misc/cd

      elif	 			  

	 [ $FUN = 2 ] ;then
	 	echo 'PS1="\e[1;$[RANDOM%7+31]m[\u@\t \W]\#\\$\e[0m"' > /etc/profile.d/env.sh  &&
		echo $COL "\$PS1 Setup is complete"	$END
	cat > .vimrc  <<EOF
set ts=4
set expandtab
set ignorecase
set cursorline
set nu
EOF
        echo $COL ".vimrc  Setup is complete" $END
#creat .vimrc




	cat > .mailrc <<EOF
set from=yuhang997@qq.com
set smtp=smtp.qq.com
set smtp-auth-user=yuhang997@qq.com
set smtp-auth-password=esvnhbnqocirbicf
set smtp-auth=login
set ssl-verify=ignore
EOF
        echo $COL ".mailrc  Setup is complete" $END
#creat .mailrc        


#try  use echo >> ~/.bashrc
# alias next line 
sed -i   "/alias rm=/a alias la='ls -A'"      ~/.bashrc
sed -i   "/alias rm=/a alias dy='dnf -y' "    ~/.bashrc
sed -i   "/alias rm=/a alias yy='yum -y '"    ~/.bashrc
#sed -i  "/alias cdnet=cd /etc/sysconfig/network-scripts/"    ~/.bashrc

#		source   ~/.bashrc
#	cause script run in subshell so source cannot effect  this should  be solved
echo "Please "source ~/.bashrc" "  
		exit  20


#setup PS1   .mailrc .vimrc  alias



	
     elif	

  [ $FUN = 3 ] ;then
	systemctl stop firewalld ;systemctl disable firewalld  &&              echo "$COL Colsed firewalld $END"
	#stop firewalld			

	cd /etc/sysconfig/network-scripts
        mv  *	/data        


	cat > ifcfg-eth0  <<EOF
NAME="eth0"
DEVICE="eth0"
IPADDR=10.0.0.11
BOOTPROTO="static"
PREFIX=24
GATEWAY=10.0.0.2
DNS1=180.76.76.76
DNS2=223.6.6.6
ONBOOT="yes"
EOF

	sed -Ei.bak  '6s/(.*)"$/\1 net.ifnames=0\"/'  /etc/default/grub
	sed -Ei.bak  '7s/(SELINUX=).*/\1disabled/' /etc/selinux/config
	grub2-mkconfig -o /boot/grub2/grub.cfg
	#setup ipaddr network name 


	read -p  "$COL Effective after restart  restart now $END ? (y/n)" CHOOSE
   if	[[ $CHOOSE =~ [yY]|[Yy][Ee][Ss] ]]  ;then
		           reboot  ;echo "$COL Rebooooooooooting  $END " 
        else
			 echo "$COL Please restart manually later  $END"		
					exit 30
      fi












  elif 

	  [ $FUN = 4 ]  ;then
          DIR=/etc/yum.repos.d           
   export MIR=/mnt/cdrom
        read -p  "use local CD for yum repositories (y/n)"  ANS
   if  [[ $ANS =~ [yY]|[Yy][Ee][Ss] ]] ;then
              [ -d "$MIR" ]   &&   echo "mount dir exist"  ||
                      mkdir "$MIR"  ;  mount /dev/cdrom  "$MIR"   &> /dev/null    &&
            echo "` blkid /dev/cdrom  |sed -En -e 's/"//g' -e 's/.*(UUID.*)LABEL.*/\1/p'` "$MIR"  iso9660  defaults 0 0" >> /etc/fstab

        if        find $DIR/bak -type d  &> /dev/null  ;then
	                              cd $DIR  ; mv $DIR/*.repo  bak
             else                 cd $DIR  ; mkdir bak ;  mv $DIR/*.repo   bak 
                    fi

       
	cat >  $DIR/aliyum.repo  <<EOF

[AppStream]
name=local Appstream
baseurl=file:///mnt/cdrom/AppStream/
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
#enable=0

[BaseOS]
name=local baseos
baseurl=file:///mnt/cdrom/BaseOS/
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
#enable=0


[epel]
name=epel
baseurl=https://mirrors.aliyun.com/epel/8/Everything/x86_64/
gpgcheck=1

[extras]
name=extras
baseurl=https://mirrors.aliyun.com/centos/8/extras/x86_64/os/
gpgcheck=1
EOF

echo " $COL done it make tow web yum repo two local yum repo $END "
                exit 40


   else

		umount $MIR &&  sed -i '/iso9660/d'   /etc/fstab

            if    find $DIR/bak -type d  &> /dev/null  ;then 
	                     cd $DIR  ; mv $DIR/*.repo  bak
              else       cd $DIR  ; mkdir bak ;  mv $DIR/*.repo   bak  
                    fi


	cat >  $DIR/aliyum.repo  <<EOF


[Base]
name=alibaseos
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
baseurl=https://mirrors.aliyun.com/centos/8/BaseOS/x86_64/os/
        https://mirrors.huaweicloud.com/centos/8/BaseOS/x86_64/os/
        https://mirrors.cloud.tencent.com/centos/8/BaseOS/x86_64/os/
#enabled=0

[Appstream]
name=aliappstream
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
baseurl=https://mirrors.aliyun.com/centos/8/AppStream/x86_64/os/
        https://mirrors.huaweicloud.com/centos/8/AppStream/x86_64/os/
        https://mirrors.cloud.tencent.com/centos/8/AppStream/x86_64/os/
#enabled=0

[epel]
name=epel
baseurl=https://mirrors.aliyun.com/epel/8/Everything/x86_64/
gpgcheck=1

[extras]
name=extras
baseurl=https://mirrors.aliyun.com/centos/8/extras/x86_64/os/
gpgcheck=1
EOF

	echo " $COL done it make four web yum repo $END "
		exit 41

            fi
		  
       else
	         echo $COL "wrong input exit" $END
    fi
         exit 100