自动批量修改用户密码

需求来源

• 因为有部分批次机器操作系统为Alibaba Group Enterprise Linux Server release 5.7 (CatFeces)，不能使用ansible管理，但是需要经常修改密码，故编写此脚本
• 需要准备密码文件（格式为 ipaddress password）
• 自动生成密码文件脚本

• ``#!/bin/bash producepass () { read -p "Please enter AddressSegment StartAddress StopAddress PassLength: " addr start stop leng for i in $(seq ${start} ${stop}) do echo ${addr}.${i}cat /dev/urandom|tr -dc '0-9a-zA-Z!@#$%^&()_+-=?'|head -c ${leng}`
  done
  }
  echo -e "\033[35m1:Generate password. \t# Need enter AddressSegment StartAddress StopAddress PassLength\033[0m"
  read -p "Please select a function: " func
  case $func in
  1)
  producepass
  ;;
  *)
  echo "Input option Error." &&exit 10
  ;;
  esac
• 自动连接远程服务器并修改密码

• #!/bin/bash
  pass='$PASSWORD'
  user='$USERNAME'
  i=0
  for ip_pass in $(cat test_ip.txt)
  do
    if [ `echo $[$i%2]` -eq 0 ]
    then
        ip=$ip_pass
        echo $ip
    elif [ `echo $[$i%2]` -eq 1 ]
    then
        new_pass=$ip_pass
        echo ${new_pass}
  /usr/bin/expect<<-EOF
        spawn ssh ${user}@${ip}
  
        expect {
            "*assword:" { send "${pass}\r"  };
        }
        expect "$"
            send "LANG=\r"
            send "sudo passwd ${user}\r"
        expect "${user}:"
            send "${pass}\r"
        expect "*assword:"
            send "${new_pass}\r"
        expect "password:"
            send "${new_pass}\r"
        expect "successfully."
            send "logout\r"
        expect eof
  EOF
  
    fi
    let i++
  done