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  • linux系统批量创建用户和生成8位随机密码

    1.1    脚本案例

    批量创建20个用户,用户名为user1-user20,并生成8位随机登录密码,用户组采用键盘输入的方式,并将用户名及登录密码保存到/tmp/create_user.txt普通文件中。

    1.2    脚本名称

    create_user.sh

    1.3    脚本代码

    #!/bin/bash
    read -p "Please input your user_group:" group_name
    groupadd $group_name
    for user in `echo user{1..20}`;
    do
    useradd -g $group_name $user
    pass=$((RANDOM+10000000))
    echo "$pass" | passwd --stdin $user > /dev/null 2>&1 && history -c
    echo -e "$user 	 $pass 	 $group_name" > /tmp/create_user.txt
    done

    1.4    脚本运行方法

    #执行创建用户脚本
    [root@localhost ~]# /bin/sh /tmp/create_user.sh                              
    Please input your user_group:kaifa
    #验证用户和组是否创建成功
    [root@localhost ~]# grep "^user*" /etc/passwd    
    user1:x:1037:1037::/home/user1:/bin/bash
    user2:x:1038:1037::/home/user2:/bin/bash
    user3:x:1039:1037::/home/user3:/bin/bash
    user4:x:1040:1037::/home/user4:/bin/bash
    user5:x:1041:1037::/home/user5:/bin/bash
    user6:x:1042:1037::/home/user6:/bin/bash
    user7:x:1043:1037::/home/user7:/bin/bash
    user8:x:1044:1037::/home/user8:/bin/bash
    user9:x:1045:1037::/home/user9:/bin/bash
    user10:x:1046:1037::/home/user10:/bin/bash
    user11:x:1047:1037::/home/user11:/bin/bash
    user12:x:1048:1037::/home/user12:/bin/bash
    user13:x:1049:1037::/home/user13:/bin/bash
    user14:x:1050:1037::/home/user14:/bin/bash
    user15:x:1051:1037::/home/user15:/bin/bash
    user16:x:1052:1037::/home/user16:/bin/bash
    user17:x:1053:1037::/home/user17:/bin/bash
    user18:x:1054:1037::/home/user18:/bin/bash
    user19:x:1055:1037::/home/user19:/bin/bash
    user20:x:1056:1037::/home/user20:/bin/bash
    [root@localhost ~]# grep "kaifa" /etc/group      
    kaifa:x:1037:
    #查看创建的用户及对应用户的8位随机密码
    [root@localhost ~]# cat /tmp/create_user.txt 
    user1    10020135        kaifa
    user2    10018434        kaifa
    user3    10004073        kaifa
    user4    10018115        kaifa
    user5    10016417        kaifa
    user6    10030208        kaifa
    user7    10018870        kaifa
    user8    10030613        kaifa
    user9    10011175        kaifa
    user10   10017527        kaifa
    user11   10021220        kaifa
    user12   10007388        kaifa
    user13   10020800        kaifa
    user14   10002884        kaifa
    user15   10028439        kaifa
    user16   10010083        kaifa
    user17   10008170        kaifa
    user18   10002190        kaifa
    user19   10030764        kaifa
    user20   10014551        kaifa

    1.5    附录

    1.5.1    批量删除用户和组命令:

    [root@localhost ~]# for user in `echo user{1..20}`;do userdel -r $user; done
    [root@localhost ~]# groupdel kaifa
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  • 原文地址:https://www.cnblogs.com/Wolf-Dreams/p/9119385.html
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