shell脚本，批量创建10个系统帐号并设置密码为随机8位字符串。

[root@localhost wyb]# cat user10.sh
#!/bin/bash
#批量创建10个系统帐号wangyb01-wangyb10并设置密码（密码为随机8位字符串）。
>user.list
for user in `seq -w `
do

   useradd wangyb$user
   password=`echo $RANDOM|md5sum|cut -c -`
   echo $password|passwd wangyb$user --stdin
   echo wangyb$user $password >> user.list
done

[root@localhost wyb]# bash user10.sh
Creating mailbox file: File exists
useradd: warning: the home directory already exists.
Not copying any file from skel directory into it.
Changing password for user wangyb01.
passwd: all authentication tokens updated successfully.
Creating mailbox file: File exists
useradd: warning: the home directory already exists.
Not copying any file from skel directory into it.
Changing password for user wangyb02.
passwd: all authentication tokens updated successfully.
Creating mailbox file: File exists
useradd: warning: the home directory already exists.
Not copying any file from skel directory into it.
Changing password for user wangyb03.
passwd: all authentication tokens updated successfully.
Creating mailbox file: File exists
useradd: warning: the home directory already exists.
Not copying any file from skel directory into it.
Changing password for user wangyb04.
passwd: all authentication tokens updated successfully.
Creating mailbox file: File exists
useradd: warning: the home directory already exists.
Not copying any file from skel directory into it.
Changing password for user wangyb05.
passwd: all authentication tokens updated successfully.
Creating mailbox file: File exists
useradd: warning: the home directory already exists.
Not copying any file from skel directory into it.
Changing password for user wangyb06.
passwd: all authentication tokens updated successfully.
Creating mailbox file: File exists
useradd: warning: the home directory already exists.
Not copying any file from skel directory into it.
Changing password for user wangyb07.
passwd: all authentication tokens updated successfully.
Creating mailbox file: File exists
useradd: warning: the home directory already exists.
Not copying any file from skel directory into it.
Changing password for user wangyb08.
passwd: all authentication tokens updated successfully.
Creating mailbox file: File exists
useradd: warning: the home directory already exists.
Not copying any file from skel directory into it.
Changing password for user wangyb09.
passwd: all authentication tokens updated successfully.
Creating mailbox file: File exists
useradd: warning: the home directory already exists.
Not copying any file from skel directory into it.
Changing password for user wangyb10.
passwd: all authentication tokens updated successfully.
[root@localhost wyb]# cat user.list
wangyb01 77950e07
wangyb02 ace3cfb1
wangyb03 2cd63081
wangyb04 0f891e3c
wangyb05 600bedd4
wangyb06 73d3dfdc
wangyb07
wangyb08 54cf685f
wangyb09 ee3f88af
wangyb10 b54d2555
[root@localhost wyb]# su wang01
su: user wang01 does not exist
[root@localhost wyb]# su wangyb01
[wangyb01@localhost wyb]$ su wangyb10
Password:
[wangyb10@localhost wyb]$ 

[root@localhost wyb]# cat deluser10.sh
#!/bin/bash
#批量删除10个系统帐号wangyb01-wangyb10并设置密码（密码为随机8位字符串）。
> user.list
for user in `seq -w `
do

   userdel wangyb$user
done

[root@localhost wyb]# bash deluser10.sh
[root@localhost wyb]# su wangyb01
su: user wangyb01 does not exist
[root@localhost wyb]#