7.8-9 chpasswd、su

[root@cs6 ~]# chpasswd
root:123456
lewen:123456
[root@cs6 ~]#             #<==在新的空行输入Ctrl+D结束输入。

[root@cs6 ~]# echo stu{01..10}|xargs -n 1 useradd
[root@cs6 ~]# tail /etc/passwd
stu01:x:1001:1001::/home/stu01:/bin/bash
stu02:x:1002:1002::/home/stu02:/bin/bash
stu03:x:1003:1003::/home/stu03:/bin/bash
stu04:x:1004:1004::/home/stu04:/bin/bash
stu05:x:1005:1005::/home/stu05:/bin/bash
stu06:x:1006:1006::/home/stu06:/bin/bash
stu07:x:1007:1007::/home/stu07:/bin/bash
stu08:x:1008:1008::/home/stu08:/bin/bash
stu09:x:1009:1009::/home/stu09:/bin/bash
stu10:x:1010:1010::/home/stu10:/bin/bash

[root@cs6 ~]# echo stu{01..10}:$((RANDOM+10000000))|tr " " "\n" >pass.txt    #将空格变成换行符\n
[root@cs6 ~]# cat pass.txt
stu01:10027070
stu02:10027493
stu03:10013323
stu04:10023959
stu05:10001639
stu06:10003292
stu07:10018430
stu08:10012448
stu09:10022958
stu10:10011925

[root@cs6 ~]# chpasswd <pass.txt
测试所设置密码的有效性：
[root@cs6 ~]# su - stu08
[stu08@cs6 ~]$ su - stu10
Password:
[stu10@cs6 ~]$ whoami
stu10

[lewen@cs6 ~]$ whoami
lewen
 
[lewen@cs6 ~]$ su - root
Password:
[root@cs6 ~]# env |egrep "USER|MAIL|PWD|LOGNAME"
USER=root
MAIL=/var/spool/mail/root
PWD=/root
LOGNAME=root

[root@cs6 ~]# taiL -1 /ete/rc.local #<==在开机启动文件/etc/rc.local中写入启动命令。
su - lewen -c ‘/bin/sh /service/scripts/deploy.sh‘