[root@lynn-04 ~]# yum install -y expect用脚本登陆远程机器
编写脚本1.expect
内容如下：
[root@lynn-04 expect]# vim 1.expect
#!/usr/bin/expect
set host "192.168.130.128" #定义变量
set passwd "6811327" #定义变量
spawn ssh root@$host
expect {
"yes/no" {send "yes\r"; exp_continue } #当提示语句出现yes/no 输入yes然后继续
"password:" {send "$passwd\r" } #当提示语句出现password 输入密码
}
interact执行结果
[root@lynn-04 expect]# chmod a+x 1.expect ; ./1.expect
spawn ssh root@192.168.130.128
root@192.168.130.128‘s password:
Last login: Wed Apr 25 07:48:41 2018 from 192.168.130.1
[root@lynn-06 ~]# 用脚本登陆远程机器执行命令后退出
编写脚本2.expect
内容如下：
[root@lynn-04 expect]# vim 2.expect
#!/usr/bin/expect
set user "root"
set passwd "6811327"
spawn ssh $user@192.168.130.128
expect {
"yes/no" { send "yes\r"; exp_continue}
"password:" { send "$passwd\r" }
}
expect "]*"
send "touch /tmp/12.txt\r"
expect "]*"
send "echo 1212 > /tmp/12.txt\r"
expect "]*"
send "ls -l /tmp/12.txt\r"
expect "]*"
send "cat /tmp/12.txt\r"
expect "]*"
send "exit\r"执行结果
[root@lynn-04 expect]# chmod a+x 2.expect ; ./2.expect
spawn ssh root@192.168.130.128
root@192.168.130.128‘s password:
Last login: Wed Apr 25 08:07:55 2018 from 192.168.130.116
[root@lynn-06 ~]# touch /tmp/12.txt
[root@lynn-06 ~]# echo 1212 > /tmp/12.txt
[root@lynn-06 ~]# ls -l /tmp/12.txt
-rw-r--r-- 1 root root 5 4月 25 08:32 /tmp/12.txt
[root@lynn-06 ~]# cat /tmp/12.txt
1212
[root@lynn-06 ~]# [root@lynn-04 expect]# 脚本传递参数
编写脚本3.expect
内容如下：
[root@lynn-04 expect]# vim 3.expect
#!/usr/bin/expect
set user [lindex $argv 0]
set host [lindex $argv 1]
set passwd "6811327"
set cm [lindex $argv 2]
spawn ssh $user@$host
expect {
"yes/no" { send "yes\r"}
"password:" { send "$passwd\r" }
}
expect "]*"
send "$cm\r"
expect "]*"
send "exit\r"执行结果
[root@lynn-04 expect]# chmod a+x 3.expect ; ./3.expect root 192.168.130.128 ls
spawn ssh root@192.168.130.128
root@192.168.130.128‘s password:
Last login: Wed Apr 25 08:32:02 2018 from 192.168.130.116
[root@lynn-06 ~]# ls
anaconda-ks.cfg com zabbix-release-3.2-1.el7.noarch.rpm
[root@lynn-04 expect]# ./3.expect root 192.168.130.128 "ls;w;ps aux|grep sshd"
spawn ssh root@192.168.130.128
root@192.168.130.128‘s password:
Last login: Wed Apr 25 08:50:42 2018 from 192.168.130.116
[root@lynn-06 ~]# ls;w;ps aux|grep sshd
anaconda-ks.cfg com zabbix-release-3.2-1.el7.noarch.rpm
08:52:15 up 1:04, 2 users, load average: 0.00, 0.01, 0.01
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root pts/0 192.168.130.1 07:48 15.00s 0.01s 0.01s -bash
root pts/1 192.168.130.116 08:52 0.00s 0.00s 0.00s w
root 826 0.0 0.4 105996 4128 ? Ss 07:48 0:00 /usr/sbin/sshd -D
root 947 0.0 0.5 148316 5376 ? Ss 07:48 0:00 sshd: root@pts/0
root 1098 0.0 0.5 148312 5504 ? Ss 08:52 0:00 sshd: root@pts/1
root 1118 0.0 0.0 112680 984 pts/1 S+ 08:52 0:00 grep --color=auto sshd
[root@lynn-06 ~]# [root@lynn-04 expect]# 设置超时
在执行的命令下面加上一行
set timeout -1 #永不超时
set timeout 1 #1秒超时
set timeout 5 #5秒超时
例如：
expect "]*"
send "vmstat 1" #这个命令会一直执行
set timeout -1
expect "]*"
send "vmstat 1" #这个命令会5秒后自动停止
set timeout 5
自动同步文件
编写脚本
内容如下：
[root@lynn-04 expect]# vim 4.expect
#!/usr/bin/expect
set passwd "6811327"
spawn rsync -av root@192.168.130.128:/tmp/12.txt /tmp/
expect {
"yes/no" { send "yes\r"}
"password:" { send "$passwd\r" }
}
expect eof执行结果
[root@lynn-04 expect]# chmod a+x 4.expect ; ./4.expect
spawn rsync -av root@192.168.130.128:/tmp/12.txt /tmp/
root@192.168.130.128‘s password:
receiving incremental file list
12.txt
sent 30 bytes received 84 bytes 228.00 bytes/sec
total size is 5 speedup is 0.04
[root@lynn-04 expect]# cat /tmp/12.txt
1212指定host和要同步的文件
编写脚本5.expect
内容如下：
[root@lynn-04 expect]# vim 5.expect
#!/usr/bin/expect
set passwd "6811327"
set host [lindex $argv 0]
set file [lindex $argv 1]
spawn rsync -av $file root@$host:$file
expect {
"yes/no" { send "yes\r"}
"password:" { send "$passwd\r" }
}
expect eof执行结果
[root@lynn-04 expect]# chmod a+x 5.expect ; ./5.expect 192.168.130.128 "/tmp/12.txt"
spawn rsync -av /tmp/12.txt root@192.168.130.128:/tmp/12.txt
root@192.168.130.128‘s password:
sending incremental file list
sent 31 bytes received 12 bytes 86.00 bytes/sec
total size is 5 speedup is 0.12
[root@lynn-04 expect]# 原文地址：http://blog.51cto.com/10963213/2107524
