telnet 批量测试端口
while，第一种，读取文件
host内容为：ip 端口
范例host.txt：192.168.0.1 22
| while read ip
do
expect <<EOF
set timeout 3
spawn telnet $ip
expect "Escape character" { send "\1D\r quit\r" }
expect eof
EOF
done < host.txt
|
while，第二种写在脚本里
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14 | while read ip
do
expect <<EOF
set timeout 3
spawn telnet $ip
expect "Escape character" { send "\1D\r quit\r" }
expect eof
EOF
done <<EOF
192.168.232.15 22
192.168.232.16 22
192.168.232.17 22
127.0.0.1 22
EOF
|
for ，读取host.txt，host内只有IP！！！没有端口！！！注意for读取时以空格为分割符，因此如果是一行多个字段独立的，建议使用while（）
| for i in $(<ip.txt)
do
expect <<EOF |grep Connected
set timeout 3;
spawn telnet $i 22
expect "Escape character" { send "\1D\r quit\r " }
expect eof
EOF
done
|