expect 交互 telnet 交互

#!/bin/bash
Ip="10.0.1.53"
a="\{\‘method\‘\:\‘doLogin\‘\,\‘params\‘\:\{\‘uName\‘\:\‘bobbietest\‘\}"
/usr/bin/expect -c"
        set timeout 15
        spawn telnet ${Ip} 8000
        expect "Escape"
        send "${a}\\r"
        expect {
-re "\"err.*none\"" {
        exit 0
}
timeout {                       
        exit 1
}
eof {
        exit 2
}
        }
"
echo $?