60天shell脚本计划-10/12-渐入佳境

--作者：飞翔的小胖猪

--创建时间：2021年3月13日

--修改时间：2021年3月17日

说明

 每日上传更新一个shell脚本，周期为60天。如有需求的读者可根据自己实际情况选用合适的脚本，也可在评论区留言提出脚本需求，作者会尽快根据需求编写相关脚本对功能进行实现。

 每篇文章包含5个脚本。

总进度：10/12

上一篇脚本链接：https://www.cnblogs.com/Pigs-Will-Fly/p/14497893.html

下一篇脚本链接：https://www.cnblogs.com/Pigs-Will-Fly/p/14592317.html

主要内容

21年3月13日-安装jdk脚本

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脚本说明

根据用户输入的jdk二进制文件路径与安装路径，安装配置jdk。

文件说明

install_jdk.sh：脚本主体文件

脚本主体

[root@135 46_install_jdk]# cat install_jdk.sh 
#!/bin/bash
#安装jdk
install_jdk(){
  #检测文件中是否配置有jdk环境变量，如果有JAVA_HOME设置表示可能已经安装了java，存在则退出
  java_num=`cat /etc/profile | grep -i java_home |wc -l`
  if [ ! ${java_num}  -eq 0 ];then
     echo -e "e[31mJAVA_HOME PATH  exits........e[0m"
     exit 22
  fi

  #输入jdk二进制文件路径,判断输入的值是否存在
  while :
  do
    echo -e "e[31m"
    read -p "Please intput jdk bin file : " file_name
    echo -e "e[34mjdk二进制文件路径：e[33m ${file_name:-not}e[0m"
    if [ -f ${file_name} ];then
      echo -e "e[32m输入文件名正确。e[0m"
      break
    else
      echo -e "输入的文件路径错误，请核对路径名，绝对路径。"
    fi
    echo -e "e[31m"
  done
  
  #键入指定的安装路径，默认为/usr/local/java/jdkv1/
  read -p "Please input install dir : " install_dir
  echo -e "e[34m安装路径：e[33m ${install_dir:-/usr/local/java/jdkv1/}e[0m"

  if  mkdir -p ${install_dir:-/usr/local/java/jdkv1/} &>/dev/null;then
    echo -e "e[32m安装路径创建成功。${install_dir}e[0m"
  else
    echo -e "e[31m安装路径创建失败。${install_dir}e[0m"
  fi
  
  unzip_file_name=`tar -ztvf ${file_name} |head -2  | awk '{print $6}' | awk -F'/' '{print $1}' |uniq`

  echo -e "e[34m解压目录：./${unzip_file_name}e[0m"
  mkdir -p ${unzip_file_name}  &> /dev/null
  tar -zxvf ${file_name} -C ./ &> /dev/null

  #复制所有文件至指定安装目录
  cp -rp ./${unzip_file_name}/*  ${install_dir:-/usr/local/java/jdkv1/} &>/dev/null

  
  #添加环境变量
  echo "JAVA_HOME=${install_dir:-/usr/local/java/jdkv1/}" >> /etc/profile
  echo 'CLASSPATH=.:$JAVA_HOME/lib.tools.jar' >> /etc/profile
  echo 'PATH=$JAVA_HOME/bin:$PATH' >> /etc/profile
  echo 'export JAVA_HOME CLASSPATH PATH' >> /etc/profile

  #执行文件
  source /etc/profile
}

#检测系统安装是否完成
check_status(){

  if java -version &>/dev/null && which java &>/dev/null ;then
    echo -e "e[32m java配置完成。e[0m"
  else  
    echo -e "e[31m java配置失败。e[0m"
    exit 66
  fi
}

main(){
  #判断系统中是否存在java
  if which java &>/dev/null;then
    echo -e "e[33m系统中已存在java软件，不需要配置。e[0m"
    echo -e "e[34mJAVA信息：e[0m"
    echo -e "`java -version`"
    exit 88
  fi
  install_jdk
  check_status
}

main

结果

**************************************************************************************************************2021年3月13日脚本结束*****************************************************************************************************************

21年3月14日-Ubuntu网络配置文件脚本

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脚本说明

用户输入待配置ip、掩码、dns、网关等信息，执行脚本会自动生成网络配置文件格式，读者可以使用重定向等手段直接把文件写入到指定的路径下。

该脚本至适用于Ubuntu操作系统，切记。

文件说明

Ubuntu_net_configure_example.sh：脚本主体文件

脚本主体

[root@135 47_Ubuntu_net_configure_example]# cat Ubuntu_net_configure_example.sh 
#!/bin/bash

#定义一些基础配置信息。
NET_NAME="ens33"
DHCP_STATA="yes"
ADDRESS='192.168.111.140'
DNS1="192.168.111.2"
DNS2="114.114.114.114"
GATEWAY="192.168.111.2"

#展示16及以下的系统网络配置文件模板
display_file_exp_16(){
  echo -e "配置文件路径：e[34m/etc/network/interfacese[0m"
  echo -e "配置文件内容："
  if [ ${DHCP_STATA} == "yes" ];then
     echo -e "e[33mauto ${NET_NAME}
iface ${NET_NAME} inet dhcpe[0m
"
  else
     echo -e "e[33mauto ${NET_NAME}
iface ${NET_NAME} inet static
    address ${ADDRESS}
    netmask 255.255.255.0
    dns-nameservers ${DNS1}
    dns-nameservers ${DNS2}
    gateway ${GATEWAY}e[0m
"
  fi
}

#展示17及以上的系统网络配置文件模板
display_file_exp_17(){
  echo -e "配置文件路径：e[34m/etc/netplan/00-installer-config.yamle[0m"
  echo -e "配置文件内容："
  if [ ${DHCP_STATA} == "yes" ];then
     echo -e "e[33mnetwork:
    ethernets:
        ${NET_NAME}:
            dhcp4: true
    version: 2e[0m"
  else
     echo -e "e[33mnetwork:
    ethernets:
        ${NET_NAME}:
            dhcp4: no
            addresses: [${ADDRESS}/24]
            gateway4: ${GATEWAY}
            nameservers:
                addresses: [${DNS1},${DNS2}]
    version: 2e[0m"
  fi
}

#检测系统版本，根据版本选择指定的函数
check_version(){
  version_id=`cat /etc/lsb-release  | awk -F"=" '/DISTRIB_RELEASE=/{print $2}' | awk -F'.' '{print $1}'`
  if [ ${version_id} -lt 17 ];then
    echo -e "e[31mSystem os version ${version_id}e[0m"
    #调用展示16以以下的网络配置
    display_file_exp_16
  else
    echo -e "e[31mSystem os version ${version_id}e[0m"
    display_file_exp_17
  fi
}

#定义主函数
main(){
  check_version
  echo -e "e[0m"
}

#调用主函数
main

结果

16系统版本执行结果

17以上执行结果

**************************************************************************************************************2021年3月14日脚本结束*****************************************************************************************************************

21年3月15日-安装lvs脚本

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脚本说明

执行脚本在ubuntu和centos系列操作系统上安装keepalived和ipvsadm软件配置并启动。

读者在使用时请根据实际环境填入虚拟ip、真实节点ip、节点负载端口号信息。

文件说明

install_keepalived_ipvsadm.sh：脚本主体文件

脚本主体

[root@135 48_install_keepalived_ipvsadm]# cat install_keepalived_ipvsadm.sh 
#!/bin/bash
#检查判断系统类型，centos使用yum安装、ubuntu使用apt安装。
check_system_type(){
  echo -ne  "System tyep: "

  #判断系统是否为centos或redhat
  if cat /etc/issue | grep -i kernel &>/dev/null;then
    echo -e "e[34mCentose[0m"
    install_soft_c
  fi

  #判断系统是否为ubuntu
  if cat /etc/issue | grep -i Ubuntu &>/dev/null ;then
    echo -e "e[34mUbuntue[0m"
    install_soft_u
  fi
}

#ubuntu操作系统安装软件
install_soft_u(){
  echo -e "e[33m开始进行软件安装......................e[0m"
  apt clean all &>/dev/null
  apt update &>/dev/null
  apt-cache dump &>/dev/null

  if apt install ipvsadm  keepalived -y &>/dev/null;then
    echo -e "e[32m执行安装成功.e[0m"
  else
    echo -e "e[31mapt configure errr or not keepalived/ipvsadm package,Please check configure.e[0m"
    exit 66
  fi
}

#centos操作系统安装软件
install_soft_c(){
  echo -e "e[33m开始进行软件安装......................e[0m"
  yum clean all &> /dev/null
  yum repolist &> /dev/null
  if yum install keepalived ipvsadm -y &>/dev/null;then
    echo -e "e[32m执行安装成功.e[0m"
  else
    echo -e "e[31myum configure errr or not keepalived/ipvsadm package,Please check configure.e[0m"
    exit 66
  fi
}

#设置net.ipv4.ip_nonlocal_bind = 1
edit_kernel_args(){
  echo -e "e[33m开始修改内核参数......................e[0m"
  sed -i '/net.ipv4.ip_nonlocal_bind/d' /etc/sysctl.conf 
  echo 'net.ipv4.ip_nonlocal_bind = 1' >> /etc/sysctl.conf
  if sysctl -p | grep -i 'net.ipv4.ip_nonlocal_bind = 1' &>/dev/null;then
    echo -e "e[32m内核参数修改完成.e[0m"
  fi
}

#configure keepalived and ipvsadm
configure_file(){
  echo -e "e[33m开始配置keepalived及ipvsadm配置......................e[0m"
  if [ -f /etc/keepalived/keepalived.conf ];then 
    mv /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak
  fi

  #写入内容到配置文件
  echo  '! Configuration File for keepalived        '  >> /etc/keepalived/keepalived.conf
  echo  '                                           '  >> /etc/keepalived/keepalived.conf
  echo  'global_defs {                              '  >> /etc/keepalived/keepalived.conf
  echo  '    router_id lvs.01                       '  >> /etc/keepalived/keepalived.conf
  echo  '}                                          '  >> /etc/keepalived/keepalived.conf
  echo  '                                           '  >> /etc/keepalived/keepalived.conf
  echo  'vrrp_instance VI_1 {                       '  >> /etc/keepalived/keepalived.conf
  echo  '    state MASTER                           '  >> /etc/keepalived/keepalived.conf
  echo  '    interface ens33                        '  >> /etc/keepalived/keepalived.conf
  echo  '    virtual_router_id 51                   '  >> /etc/keepalived/keepalived.conf
  echo  '    priority 100                           '  >> /etc/keepalived/keepalived.conf
  echo  '    advert_int 1                           '  >> /etc/keepalived/keepalived.conf
  echo  '    authentication {                       '  >> /etc/keepalived/keepalived.conf
  echo  '        auth_type PASS                     '  >> /etc/keepalived/keepalived.conf
  echo  '        auth_pass 1111                     '  >> /etc/keepalived/keepalived.conf
  echo  '    }                                      '  >> /etc/keepalived/keepalived.conf
  echo  '    virtual_ipaddress {                    '  >> /etc/keepalived/keepalived.conf
  echo  '        192.168.111.160/24                  '  >> /etc/keepalived/keepalived.conf
  echo  '    }                                      '  >> /etc/keepalived/keepalived.conf
  echo  '}                                          '  >> /etc/keepalived/keepalived.conf
  echo  '                                           '  >> /etc/keepalived/keepalived.conf
  echo  'virtual_server 192.168.111.160 80 {       '    >> /etc/keepalived/keepalived.conf
  echo  '    delay_loop 6                           '  >> /etc/keepalived/keepalived.conf
  echo  '    lb_algo wrr                            '  >> /etc/keepalived/keepalived.conf
  echo  '    lb_kind DR                             '  >> /etc/keepalived/keepalived.conf
  echo  '    #persistence_timeout 50                '  >> /etc/keepalived/keepalived.conf
  echo  '    protocol TCP                           '  >> /etc/keepalived/keepalived.conf
  echo  '                                           '  >> /etc/keepalived/keepalived.conf
  echo  '    real_server 192.168.111.135 80 {       '    >> /etc/keepalived/keepalived.conf
  echo  '        weight 10                          '  >> /etc/keepalived/keepalived.conf
  echo  '        TCP_CHECK {                        '  >> /etc/keepalived/keepalived.conf
  echo  '            connect_timeout 10             '  >> /etc/keepalived/keepalived.conf
  echo  '            retry 3                        '  >> /etc/keepalived/keepalived.conf
  echo  '            delay_before_retry 3           '  >> /etc/keepalived/keepalived.conf
  echo  '            connect_port 6443              '  >> /etc/keepalived/keepalived.conf
  echo  '        }                                  '  >> /etc/keepalived/keepalived.conf
  echo  '    }                                      '  >> /etc/keepalived/keepalived.conf
  echo  '                                           '  >> /etc/keepalived/keepalived.conf
  echo  '    real_server 192.168.111.129 80 {       '  >> /etc/keepalived/keepalived.conf
  echo  '        weight 10                          '  >> /etc/keepalived/keepalived.conf
  echo  '        TCP_CHECK {                        '  >> /etc/keepalived/keepalived.conf
  echo  '            connect_timeout 10             '  >> /etc/keepalived/keepalived.conf
  echo  '            retry 3                        '  >> /etc/keepalived/keepalived.conf
  echo  '            delay_before_retry 3           '  >> /etc/keepalived/keepalived.conf
  echo  '            connect_port 6443              '  >> /etc/keepalived/keepalived.conf
  echo  '        }                                  '  >> /etc/keepalived/keepalived.conf
  echo  '    }                                      '  >> /etc/keepalived/keepalived.conf
  echo  '    }                                      '  >> /etc/keepalived/keepalived.conf
  echo  '}                                          '  >> /etc/keepalived/keepalived.conf 
  if systemctl restart systemctl restart keepalived.service  &>/dev/null || service keepalived restart &>/dev/null;then
    echo -e "e[32mkeepalived和ipvsadm安装配置完成，并成功启动。e[0m"
  else
    echo -e "e[31m配置文件存在问题，服务无法启动，请检查。e[0m"
  fi
}

#定义主函数
main(){
  check_system_type
  edit_kernel_args
  configure_file
}

#调用组函数
main

结果

**************************************************************************************************************2021年3月15日脚本结束*****************************************************************************************************************

21年3月16日-判断闰年脚本

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脚本说明

用户输入年份脚本判断输入的年份是否为闰年，不输入则判断当前年是否为闰年。

文件说明

determine_leap_year.sh：脚本主体文件

脚本主体

[root@135 49_To_determine_leap_year]# cat determine_leap_year.sh 
#!/bin/bash
#输入年份
input_year(){
  echo -e "e[34m"
  read -p "Please enter the year you want to query,The default year is this year: " year_i
  now_year=`date +%Y`
  year=${year_i:-$now_year}
  echo -e "检测年份为：e[33m ${year}"
}

#判断是否为闰年
#1.能够被400整除
#2.能够被4整除，但是不能被100整除
check_year(){
  let y1=${year}%400
  let y2=${year}%100
  let y3=${year}%4

  echo -ne "e[34m结果为：e[32m"
  
  #如果能被400整除直接输出是闰年,程序结束
  if [ ${y1} -eq 0 ];then
    echo -e "闰年.e[0m
"
    exit 0
  fi
  #当不能被400整除时，如果能被100整除表示不是闰年，程序结束
  if [ ${y2} -eq 0 ];then
    echo -e "e[31m平年.e[0m
"
    exit 0
  fi
  #当以上条件都不满足时，如果能被4整除表示是闰年，否则为平年
  if [ ${y3} -eq 0 ];then
    echo -e "闰年.e[0m
"
    exit 0
  else
    echo -e "e[31m平年.e[0m
"
  fi
}

#定义主函数
main(){
  input_year
  check_year
}

#调用主函数
main

结果

**************************************************************************************************************2021年3月16日脚本结束*****************************************************************************************************************

21年3月17日-质数判断脚本

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脚本说明

输入一个数字判断是否为质数。

文件说明

prime_Numbers_judgment.sh：脚本主体文件

脚本主体

[root@135 100_shell]# cat prime_Numbers_judgment.sh 
#!/bin/bash
#测试质数脚本
check_number(){
  read -p "请输入一个数：" num  
  if [ $num -le 0 ];then           #判断这个数是否小于0
    echo "您输入的数为负数或0"     #echo提示用户
  elif [ $num -eq 1 ];then              #判断这个数是否为1和2 
    echo "$num  质数"
  elif [ $num -eq 2 ];then
    echo "$num  质数"
  else                               #当输入的数是正整数时
    for ((i=2;i<$num;i++))           
    do
      if [ $(($num%i)) -eq 0 ];then  #判断这个数与i取余是否等于0
        [ $num -ne $(($num%i)) ] && echo "$num  非质数" && break  
      else
        if [ $i -gt $(($num/2)) ];then
          echo "$num  质数" && break
        fi
       fi
    done
  fi
}

#定义主函数
main(){
  check_number
}

#调用主函数
main

结果

**************************************************************************************************************2021年3月17日脚本结束*****************************************************************************************************************