Using tput to label tmux panes

As I had pointed out in my post about tmux that now I am using tmux to configure and debug multiple servers inside a single window split into panes. Now I ran to another problem I always forgot which pane was meant for which service. Beyond 2 to 3 panes it was getting confusing to remember which pane is monitoring which service. So I remembered my previous post related to tput which allows anybody to show a running clock inside a linux terminal. So I decided to provision a small shell script to fix this issue. Basically I wanted a way to label each pane so that I could effortlessly identify the purpose of the pane inside tmux. So here is the code:

#!/bin/bash
#Display Service Name

function die {
echo "Dying on signal $1"
exit 0
}

function redraw {
local width length;
width=$(tput cols);
str=$1;
length=${#str}+10;
tput sc;
tput cup 0 $((width-length));
set_foreground=$(tput setaf 7)
set_background=$(tput setab 1)
echo -n $set_background$set_foreground
printf ' Service:%s ' $str
tput sgr0;
tput rc;
}

trap 'die "SIGINT"' SIGINT
trap 'die "SIGQUIT"' SIGQUIT

trap redraw WINCH;

while true; do
redraw $*;
sleep 1;
done

This shell script takes a parameter and shows it on the top right column in a red background with white foreground. This script should be invoked in this way.

./ShowTextInTerm.sh service-name &

Invoking this script in every tmux pane with relevant substitution for service-name is giving me this result:
Screen Shot 2016-02-11 at 1.59.55 pm

Please note that this script works well on my MacBook. I am yet to test it on a Linux terminal.

1 thought on “Using tput to label tmux panes

  1. atmcstck

    Just FYI: A couple of months after you wrote this post, a pair of option was added to tmux to control the insertion of text into the border of a pane, named ‘pane-border-format’ and ‘pane-border-status’.

    When ‘pane-border-status’ is set to either ‘top’ or ‘bottom’, the value of ‘pane-border-format’ is displayed. As it is a format string, that means you can use tmux vars such as #{pane_index} (or its short form #P) or #{window_index} (#W).

    https://github.com/tmux/tmux/commit/0509be07404a4f4626bbdab56d858f657dc68604

    Reply

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