shell习题-批量创建用户并设置密码

1.要求：

添加user_00 – user_09 10个用户，并且给他们设置一个随机密码， 密码要求10位包含大小写字母以及数字， 注意需要把每个用户的密码记录到一个日志文件里。

2.脚本答案:

[root@liang ~]# cat /scritp/2018-06-14/usercreate,sh  #!/bin/bash for i in `seq -w 00 09` do         password=`/usr/bin/echo $RANDOM |md5sum |cut -c 1-10`          echo "$password" >>/test/password.log         useradd user_${i}         if [ $? -eq 0 ];then                 echo "$password"|passwd --stdin user_${i}         fi done

3.执行脚本：

[root@liang 2018-06-14]# bash usercreate.sh  Changing password for user user_00. passwd: all authentication tokens updated successfully. Changing password for user user_01. passwd: all authentication tokens updated successfully. Changing password for user user_02. passwd: all authentication tokens updated successfully. Changing password for user user_03. passwd: all authentication tokens updated successfully. Changing password for user user_04. passwd: all authentication tokens updated successfully. Changing password for user user_05. passwd: all authentication tokens updated successfully. Changing password for user user_06. passwd: all authentication tokens updated successfully. Changing password for user user_07. passwd: all authentication tokens updated successfully. Changing password for user user_08. passwd: all authentication tokens updated successfully. Changing password for user user_09. passwd: all authentication tokens updated successfully.

4.密码日志

[root@liang 2018-06-14]# cat -n /test/password.log       1  8f173d44c5      2  3191176109      3  eb69246aac      4  8e779f3fcd      5  64ce0eea97      6  37dab49727      7  0e0b3ba522      8  8845012401      9  4f80f29512     10  4f244042b3

5.删除用户：

[root@liang 2018-06-14]# tail -10 /etc/passwd|awk -F ":" '{print "userdel -r "$1}'|bash