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I usually have 5 or more ssh connections to various servers, and putting this command in my .bash_profile file makes my putty window or x terminal window title change to this easily recognizable and descriptive text. Includes the username, group, server hostname, where I am connecting from (for SSH tunneling), which device pts, current server load, and how many processes are running.
You can also use this for your PROMPT_COMMAND variable, which updates the window title to the current values each time you exec a command.
I prefix running this in my .bash_profile with
[[ ! -z "$SSH_TTY" ]] &&
which makes sure it only does this when connecting via SSH with a TTY.
Here's some rougher examples from http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html
# If set, the value is executed as a command prior to issuing each primary prompt.
#H=$((hostname || uname -n) 2>/dev/null | sed 1q);W=$(whoami)
#export PROMPT_COMMAND='echo -ne "\033]0;${W}@${H}:${PWD/#$HOME/~} ${SSH_TTY/\/dev\//} [`uptime|sed -e "s/.*: \([^,]*\).*/\1/" -e "s/ //g"`]\007"'
#PROMPT_COMMAND='echo -ne "\033]0;`id -un`:`id -gn`@`hostname||uname -n 2>/dev/null|sed 1q` `command who -m|sed -e "s%^.* \(pts/[0-9]*\).*(\(.*\))%[\1] (\2)%g"` [`uptime|sed -e "s/.*: \([^,]*\).*/\1/" -e "s/ //g"` / `command ps aux|wc -l`]\007"'
#[[ -z "$SSH_TTY" ]] || export PROMPT_COMMAND
#[[ -z "$SSH_TTY" ]] && [[ -f /dev/stdout ]] && SSH_TTY=/dev/stdout
And here's a simple function example for setting the title:
function set_window_title(){ echo -e "\033]0; ${1:-$USER@$HOST - $SHLVL} \007"; }
The command above has been changed due to very good constructive criticism - thanks x 2! This command can be used after acquiring mac's, ip's and hostname's or any of the above from a freshly scanned LAN. User must be root, and remember to change your settings on your network managing software manually (Fedc10 NetworkManager Applet 0.7.1 is mine) instead of 'auto DHCP'. You can also substitute eth0 for wlan0 etc - be good and ENJOY!
I've seen some versions of hostname that don't have the -i option, so this may not work everywhere. When available, it's a better alternative than using ifconfig and wasting eyeball muscle to search for the address, and it's definitely simpler than using awk/sed.