Fix terminal title after SSH remote logging to another machine

Question

right now I am using an one-line perl code to change titles of my terminal bars,

print("\e]0;@ARGV\7");

but every time after I ssh to another remote machine, the title will be modified by the host (by which I'm not particularly bothered). But after I exit from the connection, the modified title remains. Is there a way to fix this? essentially I want a fixed title for my terminals when operating locally.

I primarily use xfce terminal and terminator under either CentOS or Debian. Thanks.

EDIT

Another subtlety is that, rather having all terminals the same name, I would prefer to have the freedom to edit their titles on-the-fly but only forbid SSH session from modifying what I edited.

Answer 1

I don't know about window titles, but I have been trying to have my system do something on terminating a ssh session—actually, after terminating a ssh session. In short: it doesn't work like that. Basically you have three choices:

1. Write a wrapper around ssh, i.e., an executable shell script named ssh that takes precedence over /usr/bin/ssh in your $PATH which contains the line exec /usr/bin/ssh $@ somewhere in its middle. This enables you to have your shell do some stuff before and after the effective ssh binary is run, while keeping th eoverhead to a minimum.

2. Write a patch against the SSH sources of your choice to provide you a cleanup hook that executes a shell command passed via commandline or some config-setting. That's what we want.

3. Have PROMPT_COMMAND evaluate the output of history. Basically a more generic and more ugly approach to 1.

Answer 2

Solution: add some functions ~/.bashrc to do something after ssh and su commands

function title()
{
   # change the title of the current window or tab
   echo -ne "\033]0;$*\007"
}

function ssh()
{
   /usr/bin/ssh "$@"
   # revert the window title after the ssh command
   title $USER@$HOST
}

function su()
{
   /bin/su "$@"
   # revert the window title after the su command
   title $USER@$HOST
}

Note: restart bash after edits to ~/.bashrc

Example:

# title is "user1@boxA"
ssh boxB  # auto changes title while on boxB to "user1@boxB"
exit
# title returns back to "user1@boxA" because of our title call in ssh()
su - user2 # auto changes title while switched user to user2: "user2@boxA"
exit
# title returns back to "user1@boxA" because of our title call in su()

Hope that helps.

Answer 3

Configure your local shell dotfile (e.g. $PROMPT_COMMAND in ~/.bashrc) to set the terminal title appropriately, using the same mechanism.

For example:

export PROMPT_COMMAND="printf '\e]0;bash\7\n'"

Answer 4

ADD these lines to ~/.bashrc

# If this is an xterm set the title to user@host:dir
case "$TERM" in
xterm*|rxvt*)
    PS1="\[\e]0;${debian_chroot:+($debian_chroot)}\u@\h: \w\a\]$PS1"

    ;;
*)
    ;;
esac

works well with debian based linuxes

Answer 5

One solution is to change the terminal variable to vt100 before ssh'ing, e.g. run

export TERM=vt100

This works because usually initialization scripts look at the terminal variable and only change it title it it's xterm. You lose alternate screens, colors and maybe some other fancy features you may or may not appreciate.

If you want to keep the local terminal as xterm, alias ssh to change the terminal variable on the fly, like

alias ssh='TERM=vt100 /usr/bin/ssh'

Answer 6

I fixed this issue by adding this to my PS1 in my .bashrc file.

\[\e]2;\u@\H:\w\a\]

Therefore the whole line looks like this(I've customized my PS!:

export PS1='\[\e]2;\u@\H:\w\a\]\n($LOGNAME@$HOSTNAME) \t\n[$PWD]: '

I hope that helps others.

Answer 7

Other answers wouldn't work for me when I exit SSH, but got me close. Adding setw automatic-rename works when I exit remote ssh session so it auto renames and don't have to exit the window anymore to reset. [Jan. 2018 - Debian 9]

ssh() {
tmux rename-window "$*"
command ssh "$@"
tmux setw automatic-rename
}