Putty title changes after login

I am connecting with putty to a stock Ubuntu machine hosted at EC2, and notice the following:

When I connect, the title of the putty window appears at first as the hostname I enter (e.g. "myhostname.com"). After it's connected, the hostname changes to a different string - user@domU-12-31-20-0a-81-AB: ~ (different on each machine).

This look like an ethernet address of sort, I'm not sure. It's really annoying because once I open 2-3 putty consoles I can't remember which is which.

Is it possible a ~/.bashrc script run from the machine itself changes the putty title? Somewhere else I should look into?

Update:

I forgot to mention this ... but I have tried this and the title I set up in the connection is shown briefly when connecting, but then overriden just like the default hostname title.

Solution 1:

It's most likely updated by your shell prompt ($PS1 in ~/.bashrc or the system-wide /etc/bash.bashrc). Look for \e]2; or \033]2; or a similar escape sequence.

Your given example looks like the usual "<user>@<host>:<path>" template, in which domU-12-31-20-0a-81-AB is the server's hostname as currently configured in the kernel. Most likely, it was assigned by an automated Xen domU creation tool based on your virtual server's Ethernet address.

You can change the current hostname by using hostname newname. To make it persist across reboots, look around in /etc – on every reboot, the hostname is read from the file /etc/hostname (other distributions may use /etc/sysconfig/hostname or similar).

Solution 2:

The easier answer to this question is two configuration changes in your Putty preferences for the session(s):

1. In Window -> Behaviour set your desired Window title.

2. In Terminal -> Features check Disable remote-controlled window title changing.

Solution 3:

You can change the title in putty (under linux) with this command:

PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME}: ${PWD}\007"'

in this case, it will display your USER name, your HOSTNAME and it wil Print out your current Working Directory

or you can do this, with a string of your choosing:

xterm -T "Title of My xterm" -n "Title when minimized"

Solution 4:

An exert from the /etc/bash.bashrc file is to run the following line to fix your title back to the default:

echo -ne "\033]0;${USER}@${HOSTNAME}: ${PWD}\007"