expect自动交互处理远程服务器

    我们通过Shell可以实现简单的控制流功能，如：循环、判断等。但是对于需要交互的场合则必须通过人工来干预，有时候我们可能会需要实现和交互程序如telnet服务器等进行交互的功能。而Expect就使用来实现这种功能的工具。

实现登录到服务器192.168.0.100然后运行ls   -l >cwmmmm.txt这条命令
==============================================
#!/usr/bin/expect -f
set timeout 30
set passwd PHILIPS
spawn ssh -lroot -p22 192.168.0.100
set timeout 1
expect "password:"
send "$passwd\r"
expect   "#"
send   "ls   -l >cwmmmm.txt\r"
expect eof


更改远程服务器密码(先用root登录后然后更改用户cwm密码并退出
================================================
#!/usr/bin/expect -f
set timeout 30
set passwd PHILIPS
spawn ssh -lroot -p22 192.168.0.100
set timeout 1
expect "password:"
send "$passwd\r"
expect   "#"  
send   "passwd cwm\r"
expect "New UNIX password:"
send "111111\r"
expect "Retype new UNIX password:"
send "111111\r"
expect eof  #执行完后退出


interact   #另外一种是执行完后不退出
{
#timeout 2 { send "ls\r" }
#{ send "ls -l\r" }
#}


批量更改密码 ./cwm1.sh 192.168.0.100 root  philips PHILIPS 
============================================================
#!/usr/bin/expect -f
set ipaddress [lindex $argv 0]
set username [lindex $argv 1]
set password [lindex $argv 2]
set newpassword [lindex $argv 3]
set timeout 30
spawn ssh -l$username $ipaddress
expect "password:"
send "$password\r"
expect   "#"  
send   "passwd\r"
expect "*password:"
send "$newpassword\r"
expect "*password:"
send "$newpassword\r"
interact
#timeout 2 { send "ls\r" }
#{ send "ls -l\r" }
#}

再运行脚本
./cwm1.sh 192.168.0.100 root  philips PHILIPS

 

 

 

 

----------------------------------------------------------------------------

用expect实现自动登录SSH服务器,并在远端执行命令

脚本内容如下：

#!/usr/bin/expect -f

if {$argc<2} {
puts stderr "Usage: $argv0 host user passwaord timeout"
exit 1
}
set HOST [lindex $argv 0]
set USER [lindex $argv 1]
set PASSWD [lindex $argv 2]
set TIMEOUT [lindex $argv 3]

set timeout $TIMEOUT

spawn ssh -l $USER $HOST

# 判断是否是第一次登录
expect_before "no)?" {
send "yes\r" }
sleep 1

# 输入密码
expect "password:"
send "$PASSWD\r"
#如果想直接进入交互模式,可以直接用下面这句
#interact

#自动在远端服务器执行命令

#判断提示符
sleep 2
expect "*#"
send "mkdir /blog.zhangjianfeng.com/tmp/abcd -p\r"
send "ls -l\r"
expect "*#"
exit

## END ##

如果需要调用多台主机，可以写一个shell脚本来调用上面的脚本expect.sh
#cat callexpect.sh
#!/bin/bash
TIMEOUT=2
for i in `cat list`
do
HOST=${i%% *}
USER=`echo $i | awk -F [\ :] ‘{print $2}’`
PASS=${i##*:}
./expect.sh $HOST $USER $PASS $TIMEOUT
done
#list文件格式是 ip:user:passwd

 

 

expect -c "
 18     set timeout 3600;
 19     spawn scp ${path}${product}-1.0.0-${num}.i386.rpm ${path}${product}-1.0.0-${num}.i386.tmp 
 20      expect {
 21                \"*yes/no*\" {send \"yes\r\";exp_continue}
 22                \"*password*\" {send \"密码\r\";}
 23              }
 24 expect eof;"