How to sent escape character ^] through a spawned telnet session

tcltelnet

I am able to open a spawned telnet session in a shell script to run some commands. Afterwards, I am trying to send the escape character using send (see syntax below) but it never gets to the part where I am able to close the session. Can someone point me in the right direction? Due to this issue, I am opening up multiple telnet sessions this way, which I do not want to do.

send "^]\r"
expect "telnet>"
send "close\r"
close $spawn_id

Best Answer

You send the ESC control sequence. Try send "\x1b\r"

Related Solutions

Linux – Can’t close a scpi(telnet) session with echo “^]” when I use it in a script

On Linux it's actually:

CTRL + ] then ENTER

Finally type in the quit command.

^]

telnet> quit
Connection closed.
[fred@localhost ~]$

Bash – Sending Commands through Telnet via Bash Script

I solved this problem by expecting the bash again after I send my command.

When ran like this:

send "password\r"
expect "*$*"
send "ls\r"

The telnet session immediately ended. What ended up working was to expect the start of the bash script again. Because the script ends after it sends the last command, it doesn't have a chance to display the result of the command entered.

I addressed this by adding an additional expect which then allowed my command to process and get the results.

Here is my final code.

#!/usr/bin/expect
spawn telnet localhost
set timeout 10
expect "debian login"
send "test\r"
expect "Password:"
send "password\r"
expect "*$*"
send "ls\n"
expect "*$*"
send "command2"
expect "*$*"
send "command3"
expect "*$*"
send "exit\r"

Best Answer

Related Solutions

Linux – Can’t close a scpi(telnet) session with echo “^]” when I use it in a script

Bash – Sending Commands through Telnet via Bash Script

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