Remote telnet from file

[SirLucas]

Hey guys I'm a new member to these forums after always looking here for answers. I'm stumped on a perl script that I'm hoping is very easy for someone else.

I'm looking for a perl script (or bash whatever is easier) to telnet to a remote IP using the usernames/passwords that are (currently) in a CSV file but any type of file will do.

I know how to make a script to log into a remote telnet session if I put in the IP and U/P manually, but I need the script to read from a file and input the IP/U/P.

Any help... links... anything at all is greatly appreciated!

[SirLucas]

Or if anyone has one for a SSH login, I'm sure the conversion is very easy.

Remote SSH login script that reads from a file filled with usernames/passwords/ips

Thanks again!

[Irithori]

For ssh, you usually work with authorized keys and ssh-agent(s).
With that in place, you won´t need to provide a password for the connections.

For the multiple connections based on a file:
Depends on what you want to do.
a) interactive console:
Have a look at SourceForge.net: clusterssh
The config file lets you configure (multiple) groups of hosts

b) "run the same script everywhere"
parallel-ssh - PSSH: Parallel SSH Tools - Google Project Hosting
Here, you can provide a file with a list of hosts "-h)
and can "send input" via another file with "-I".
This other file would contain bash/whatever commands

[SirLucas]

Thank you for the response!

I've been exposed to the SSH keys but it does not pertain to what I need accomplished. I was using the example for an SSH login script just because I figured it would be real easy to convert to telnet.


Where I'm at right now: I have a bash script running EXPECT to auto-log into my telnet server.
--

#!/usr/bin/expect -f
spawn telnet x.x.x.x
expect -re "User Name"
send "USERNAME\r"
expect -re "Password"
send "PASSWORD\r"
expect -re "4- Logout"
send "4\r"
sleep 3
send "exit\r"
expect eof

--

The only problem is I have to manually put in the IP/USERNAME/PASSWORD.

Is there a way that I can have file ... lets call it 'logins.txt' or something that my EXPECT script can read from and just go down the list of IPS/USERNAMES/PASSWORDs?

[SirLucas]

Alright guys in case anyone was wondering how my progress was going (which i'm sure all of you were )

Almost everything is working.

#!/usr/bin/expect
INPUT=./pdu_logins.csv
OLDIFS="$IFS"
IFS="1G,"
[ ! -f $INPUT ] && { echo "$INPUT file not found"; exit 99; }
while read acctPDUID acctID rackPDU username password ip type
do

spawn telnet $ip
sleep1
expect -re "User Name"
send "$username\r"
expect -re "Password"
send "$password\r"
expect -re "4- Logout"
send "4\r"
sleep 3
send "exit\r"

done < $INPUT
IFS=$OLDIFS



Here's my error

$ ./login2.sh
invalid command name "INPUT=./pdu_logins.csv"
while executing
"INPUT=./pdu_logins.csv"
(file "./login2.sh" line 2)


The weird part is if I run these separate..
#!/usr/bin/expect -f
spawn telnet $ip
sleep1
expect -re "User Name"
send "$username\r"
expect -re "Password"
send "$password\r"
expect -re "4- Logout"
send "4\r"
sleep 3
send "exit\r"

and

#!/bin/bash
INPUT=./pdu_logins.csv
OLDIFS="$IFS"
IFS="1G,"
[ ! -f $INPUT ] && { echo "$INPUT file not found"; exit 99; }
while read acctPDUID acctID rackPDU username password ip type
do
echo '$ip'
done < $INPUT
IFS=$OLDIFS

They work. So it's something about combining them. I think it has to do with the #!/bin/bash and the #!/usr/bin/expect -f


Any advice? I feel so close!!

[SirLucas]

*small bump* for edit to clarify things. And my deadline is today sORRY!

[SirLucas]

I finally got it in case anyone out there might ever need a script like this.


#!/bin/bash
INPUT=/directory/file
OLDIFS=$IFS
IFS=,
[ ! -f $INPUT ] && { echo "$INPUT file not found"; exit 99; }
while read username password ip
do

/usr/bin/expect - << EndMark

spawn telnet $ip
sleep 2
expect -re "User Name"
sleep 1
send $username
send "\r"
sleep 1
expect -re "Password"
sleep 1
send $password
send "\r"
sleep 1
expect -re "4- Logout"
send "4"
send "\r"
sleep 2


EndMark

done < $INPUT
IFS=$OLDIFS



Works like a charm!