[CentOS7]expect telnet

• 交换机管理 登录账号密码很长输入很不方便

cat > tl.sh <<'EOF'
#!/usr/bin/expect
#set passwd "12345678\n"
set timeout 20
# 外部传递参数
set host [lindex $argv 0]
spawn telnet $host
    expect {
        "oot:"
        {
            send "root\n"
            expect "*assword:" { send "www.example.com\n"}
        }
        "*assword:"
        {
            send "www.example.com\n"
        }
    }
# 提供交互
interact
# 匹配后退出
#expect eof
EOF

• 使用

chmod +x ./tl.sh
./tl.sh 172.16.0.1

END