Unix script

[Rui Vilao]

Greetings,

Our HP-UX boxes are connected via the network to some equipment we manage.
We can open a telnet session on these equipments and enter some administrative commands:

telnet x.x.x.x
5 (access level)
xxxxxxxxx (password)
Maint

etc...

exit

I was asked to write a script to run on the HP-UX box to automate these procedures.

Any suggestions?

TIA,

Kind Regards,

Rui.

[Bernie Vande Griend]

What type of equipment: servers, routers, switches?
For routers, switches, your best bet is to use expect and create an expect script that does this.
Here are some examples:
http://tcl.activestate.com:8002/resource/software/extensions/expect/

If its a server, I would suggest using remsh or ssh instead of passing passwords around.

You can try passing commands directly to the telnet sessions by redirecting commands to it, but that is difficult as telnet is interactive. Expect is the best way to anticpate what response you will have and issue the commands at the appropriate time.

[harry d brown jr]

You can also use perl and there is an "Expect.pm" available. Perl will be stronger than any shell script.

live free or die

harry

[linuxfan · Accepted solution]

Hi Rui,

You could try something like

/Begin/
#!/usr/bin/sh
# here hostname is the name of the remote machine
# username is the name of the user
# password is the password of the user username

REMOTE=hostname
(sleep 5
echo username
sleep 5
echo password
sleep 15
echo "ls -ald /tmp"
sleep 5
echo exit) |telnet $REMOTE

/End/

this is to connect to regular servers, The same could be modified to connect to switches/routers etc.

The other option is to use expect and/or write perl program using expect.pm module.


-HTH
Ramesh

[Rui Vilao]

First of all,

Bernie, Harry and Ramesh, thanks a lot
for your contribution!

Ramesh your solution is exactly what I was looking for.

Many thanks,

Kind Regards,

Rui.