基于TCL语言的expect 自动应答实例

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expect 自动应答                   TCL(Tool Command Language)语言


yum -y install expect
Summary     : A program-script interaction and testing utility
Description :
Expect is a tcl application for automating and testing
interactive applications such as telnet, ftp, passwd, fsck,
rlogin, tip, etc. Expect makes it easy for a script to
control another program and interact with it.
This package contains expect and some scripts that use it.

任何有交互性的操作，都可以用expect来做

例1，使用expect修改用户密码
#!/bin/bash
expect <<EOF > /dev/null 2>&1
spawn passwd $1                --产生passwd $1这个命令
expect "rd:"                --当停在rd:结尾这个标识符时
send "456\r"                --我就把456传给它
expect "rd:"                --当再次停在rd:结尾这个标识符时
send "456\r"                --我就再次把456传给它
expect eof                --表示expect结束
EOF
# sh 1.expect test    --执行方法，因为脚本里写的是$1，所以后面接你要修改密码的用户名

例2，使用expect下载同步ftp共享的文件
# cat 2.expect
#!/bin/bash
expect <<EOF &> /dev/null
spawn lftp 10.1.1.10 -u notes
expect "Password:"
send "123\n"
expect "10.1.1.10:~>"
send "mirror mysql/ /notes/\n"
send "mirror program/ /notes/\n"
send "quit\n"
expect eof
EOF
# sh 2.expect

例3，使用expect实现ssh传密码
#!/bin/bash
sed -i '/^'$1'/d' /root/.ssh/known_hosts
expect << EOF > /dev/null 2>&1
spawn ssh $1
expect "no)?"
send "yes\r"
expect "password:"
send "123456\r"
expect "# "
send "touch /root/Desktop/123\n"
send "exit\n"
expect eof
EOF
------------------
#!/bin/bash
LANG=c
sed -i '/^'$1'/d' /root/.ssh/known_hosts
expect <<EOF  > /dev/null 2>&1
spawn ssh $1
expect "(yes/no)?"
send "yes\r"
expect "rd:"
send "redhat\r"
expect "# "
send "rm -fr /tmp/*\r"
send "touch /tmp/file01\r"
send "touch /var/tmp/abc\r"
send "exit 1\r"
EOF
-------------------
--关于上面跳过yes的问题，可以加下面的参数来做
ssh 192.168.0.1 -o StrictHostKeyChecking=no
[iyunv@i ~]# vim $HOME/.ssh/config
Host 192.168.0.*
StrictHostKeyChecking no