| 知乎专栏 |
$ sudo apt-get install expect
命令含义
#!/usr/bin/expect set timeout 30 spawn ssh root@192.168.1.1 expect "password:" send "mypassword\r" interact
set 设置变量
spawn 执行命令
expect 检测点
send 发送指令
例 22.2. example for expect
cat tech-support.exp #!/usr/bin/expect set timeout 30 spawn telnet 172.16.1.24 expect "Password: " send "chen\r" expect "*>" send "enable\r" expect "Password: " send "chen\r" expect "*#" send "sh tech-support\r" send "!\r" expect "*-Switch#" send "exit\r" expect eof exit
3层设备
cisco.exp #!/usr/bin/expect set ip [lindex $argv 0] set username [lindex $argv 1] set password [lindex $argv 2] log_file $ip.log spawn telnet $ip expect "Username:" send "$username\r" expect "Password:" send "$password\r" expect "#" send "show running-config\r" send "exit\r" expect eof
2层设备
$ cat config.exp
#!/usr/bin/expect
set timeout 30
set host [lindex $argv 0]
set password [lindex $argv 1]
set done 0
log_file $host.log
spawn telnet $host
expect "Password:"
send "$password\r"
expect "*>"
send "enable\r"
expect "Password: "
send "$password\r"
expect "*#"
send "show running-config\r"
while {$done == 0} {
expect {
" --More--" { send -- " " }
"*#" { set done 1 }
eof { set done 1 }
}
}
send "\r"
expect "*#"
send "exit\r"
expect eof
exit
$ cat loop.sh
#! /bin/sh
while read sw
do
./config.exp $sw
done <<EOF
172.16.0.240 chen
172.16.0.241 chen
172.16.0.242 chen
172.16.0.243 chen
172.16.0.245 chen
172.16.0.246 chen
EOF
$ chmod +x config.exp loop.sh
$ ./loop.sh
例 22.3. example for expect
#!/usr/bin/expect set timeout 30 spawn ssh root@192.168.1.1 expect "password:" send "mypassword\r" interact
例 22.4. example 1
#!/usr/bin/expect set password 1234 #密码 #download spawn scp /www/* root@172.16.1.2:/www/ set timeout 300 expect "172.16.1.2's password:" set timeout 3000 #exec sleep 1 send "$password\r" set timeout 300 send "exit\r" #expect eof interact spawn scp /www/* root@172.16.1.3:/www/ set timeout 300 expect "root@172.16.1.3's password:" set timeout 3000 #exec sleep 1 send "$password\r" set timeout 300 send "exit\r" interact
例 22.5. *.exp
$ expect autossh.exp neo@192.168.3.10 chen "ls /"
autossh.exp
#!/usr/bin/expect -fset ipaddress [lindex $argv 0]
set ipaddress [lindex $argv 0]
set passwd [lindex $argv 1]
set command [lindex $argv 2]
set timeout 30
spawn ssh $ipaddress
expect {
"yes/no" { send "yes\r";exp_continue }
"password:" { send "$passwd\r" }
}
expect ""
send "$command \r"
send "exit\r"
expect eof
exit
批量执行
password.lst 192.168.0.1 passwd 192.168.0.2 passwd 192.168.0.3 passwd
#!/bin/bash
cat password.lst | while read line
do
host=$(echo $line|awk '{print $1}')
passwd=$(echo $line|awk '{print $2}')
expect autossh.exp $host $passwd
sleep 2
done
#! /usr/bin/expect -f spawn scp 1 neo@192.168.0.1: expect "*password:" send "your password\r" expect eof
#!/bin/expect
spawn scp x.x.x.x
for {} {1} {} {
expect {
"password:" {
send "YourPassWord"
}
}
}
spawn scp 1 neo@172.16.0.1:
for { set i 1 } {$i<5} {incr i} {
expect {
"*password:" {send "koven\r"}
"*(yes/no)*" {send "yes\r"}
}
}
expect -c '
spawn openssl req -newkey rsa:4096 -nodes -sha256 -keyout domain.key -x509 -days 3650 -out domain.crt
expect {
"Country Name" { send "CN\r"; exp_continue}
"State or Province Name" { send "Guangdong\r" ; exp_continue}
"Locality Name" { send "Shenzhen\r"; exp_continue}
"Organization Name" { send "netkiller\r"; exp_continue}
"Organizational Unit Name" { send "Neo\r"; exp_continue}
"Common Name" { send "netkiller.cn\r" ; exp_continue}
"Email Address" { send "netkiller@msn.com\r" ; exp_continue}
eof { exit }
}'