We help IT Professionals succeed at work.

We've partnered with Certified Experts, Carl Webster and Richard Faulkner, to bring you a podcast all about Citrix Workspace, moving to the cloud, and analytics & intelligence. Episode 2 coming soon!Listen Now

x

How to create  a shell script to automate telnet?

xzhang
xzhang asked
on
Medium Priority
505 Views
Last Modified: 2008-02-26
While I am login in my shool Unix system. I'd like
to do use telnet to get homepage, for example "telnet
cnn.com 80" "GET /index.html HTTP/1.0\n\n" This works.
But if I put "GET /index.html HTTP/1.0\n\n" into a
file . and do "telnet cnn.com 80<afile", this won't work.
Why?
Thanks
Comment
Watch Question

ozo
CERTIFIED EXPERT
Most Valuable Expert 2014
Top Expert 2015

Commented:
If you have expect
expect -c 'spawn telnet cnn.com 80; expect "Connected"; send "GET /index.html HTTP/1.0\r\r"; expect "Connection closed"'
telnet is an interactive program. It expects input from a terminal attached device (tty). As ozo said, you can use
a program like expect that acts like a modem chat script to
'expect' something and then 'send' something else. You cannot
make telnet take input from a file (or ftp for that matter -
thought ftp does have a .netrc that you can do some things
with)
expect - ftp.cme.nist.gov
(requires Tcl - ftp.smli.com)

Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.