Ant: Telnet is not working

I am trying the below Ant telnet task:

 <telnet userid="uid" password="pass" server="${BT_Server}">
    <read>/u01/appldev/devappl/po/11.5.0/reports</read>
    <write>ls</write>
    <read string="/u01/appldev/devappl/po/11.5.0/reports"/>
 </telnet>

It will execute for infinite time afte开发者_开发问答r login to the remote server. Getting below message:

Buildfile: C:\Program Files\Java\apache-ant-1.8.1\build.xml

sql_compile:
   [telnet] Unauthorised Access is Illegal
   [telnet] login:
   [telnet] uid
   [telnet]  Password:

I need to forcefully terminate the job by pressing ctrl+c. It is giving a message- "Terminate batch job (Y/N)?"

---

Solve the problem. Read actually wait for the text which is appearing at the UNIX prompt.

<telnet userid="uid" password="pass" server="${Server}">
    <read>authorisation (Y/N)? :</read>
    <write>y</write>
    <read>to continue</read>
    <write>\n</write>
    <read>/export/home/appldev></read4>
    <write>sh test_sql.sh "{$Release_Name}"</write>
    <read string="DEV - uid@host:/export/home/appldev>"/>
</telnet>