倒计时脚本:

  1 #!/bin/bash

  2 read -p "please input the num of hour: " hour

  3 read -p "please input the num of minutes:" minutes

  4 read -p "please input the num of sec: " s

  5 sec=$hour*60*60+$minutes*60+$s

  6 for ((sec=$sec;sec>0;sec--))

  7 do

  8 echo -ne "Come on,$(($sec/(3600))) hours $((($sec/60)-60)) minute $((($sec%3600)%60)) s later , New Year is coming...  "

  9 echo -ne "\r    \r"

 10 sleep 1

 11 done

作业脚本（不完全版本）:

文件1: /mnt/11/scan.sh

内容:

  1 #!/bin/bash

  2 for num in {1..30}

  3 do

  4 ping -c1 -w1 172.25.254.$num &> /dev/null && (

  5         /mnt/11/scp.exp 172.25.254.$num

  6         /mnt/11/ssh.exp 172.25.254.$num

  7 )

  8 done

文件2: /mnt/11/ssh.exp

内容:             

  1 #!/usr/bin/expect

  2 set timeout 2

  3 set ip [lindex $argv 0]

  4 spawn ssh root@$ip sh /mnt/11/creat/creatuser.sh

  5 expect {

  6         "yes/no" {send "yes\r";exp_continue}

  7         "password" {send "redhat\r"}

  8 }

  9 expect eof

文件3: /mnt/11/scp.exp

内容:

  1 #!/usr/bin/expect

  2 set timeout 2

  3 set ip [lindex $argv 0]

  4 spawn scp /mnt/11/creat/creat_user.sh root@$ip:/mnt

  5 expect {

  6         "yes/no" {send "yes\r";exp_continue}

  7         "password" {send "redhat\r"}

  8 }

  9 expect eof

 10 

 11 spawn scp /mnt/11/creat/userfile root@$ip:/mnt

 12 expect {

 13         "yes/no" {send "yes\r";exp_continue}

 14         "password" {send "redhat\r"}

 15 }

 16 expect eof

 17 

 18 spawn scp /mnt/11/creat/passwdfile root@$ip:/mnt

 19 expect {

 20         "yes/no" {send "yes\r";exp_continue}

 21         "password" {send "redhat\r"}

 22 }

 23 expect eof

文件4: /mnt/11/creat/creatuser.sh

内容:

  1 #!/bin/bash

  2 if [ ! -f /mnt/11/creat/userfile ];then

  3 echo "userfile is not exist"

  4 exit 1

  5 fi

  6  if [ ! -f /mnt/11/creat/passwdfile ];then

  7 echo "passwdfile is not exist"

  8 exit 1

  9 fi

 10 

 11 line1=$(wc -l /mnt/11/creat/userfile | cut -d " " -f 1)

 12 line2=$(wc -l /mnt/11/creat/passwdfile | cut -d " " -f 1)

 13 

 14 if [ ! "$line1" -eq "$line2" ];then

 15 echo "the user and passwd not match"

 16 exit 1

 17 fi

 18 

 19 for num in $( seq 1 $line1 );do

 20         name=`sed -n ${num}p /mnt/11/creat/userfile`

 21         pass=`sed -n ${num}p /mnt/11/creat/passwdfile`

 22         useradd $name &> /dev/null

 23         if [ "$?" -eq 0 ];then

 24         echo $pass | passwd --stdin $name &> /dev/null

 25         echo "$name is success"

 26         else

 27         echo "$name is exits"

 28         fi

 29 done

文件5: /mnt/11/creat/userfile

内容:

   lzt1

   lzt2

   lzt3

文件6: /mnt/11/creat/passwdfile

内容:

   123

   123

   123

运行: 

chmod +x /mnt/11/ssh.exp

chmod +x /mnt/11/scp.exp

sh /mnt/11/scan.sh

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作业（脚本）