TMUX terminal

A nice linux terminal environment

I always want to have a nice environment when I log into my linux boxes. One way to achieve this is to use TMUX, It allows me to customize the terminal and keep all my sessions, if I loose my connection to the box. Here is a screen dump of one of my boxes from mobaxterm:

tmux-screendump

First we need to install TMUX.

apt-get install tmux

Then I put a configuration file (~/.tmux.conf) and customize it to my needs.

# remap prefix from 'C-b' to 'C-a'
unbind C-b
set-option -g prefix C-a
bind-key C-a send-prefix

# split panes using | and -
bind | split-window -h
bind - split-window -v
unbind '"'
unbind %

# reload config file (change file location to your the tmux.conf you want to use)
bind r source-file ~/.tmux.conf

# switch panes using CTRL-arrow without prefix
bind -n C-Left select-pane -L
bind -n C-Right select-pane -R
bind -n C-Up select-pane -U
bind -n C-Down select-pane -D

# Enable mouse mode
set -g mouse on

# Start numbering at 1
set -g base-index 1

# Activity monitoring
setw -g monitor-activity on
set -g visual-activity on

# Scroll history
set -g history-limit 30000

# Bind function keys for each terminal
bind -n F1 select-window -t 1
bind -n F2 select-window -t 2
bind -n F3 select-window -t 3
bind -n F4 select-window -t 4
bind -n F5 select-window -t 5
bind -n F6 select-window -t 6

# Full screen on F12
bind -n F12 resize-pane -Z

# F10 makes a pane into its own screen
bind -n F10 break-pane

# Status bar and colors
set -g default-terminal "screen-256color"

set -g set-titles on
set -g set-titles-string '#H'
setw -g window-status-format '#I:#W#F'


set -g status-interval 1
set -g status-justify left
set -g display-time 1500
set -g repeat-time 500

setw -g mode-attr bold
setw -g mode-fg colour196
setw -g mode-bg colour239

set -g pane-border-bg colour235
set -g pane-border-fg colour239
set -g pane-active-border-bg colour236
set -g pane-active-border-fg colour199

set -g status-position bottom
set -g status-bg colour234
set -g status-fg colour137
set -g status-attr dim
set -g status-left '#[fg=colour255,bg=colour53,bold] #H #[bg=colour234] '
set -g status-right '#[fg=colour255,bg=colour53,bold] #(cut -d " " -f 1-3 /proc/loadavg) | %H:%M:%S %Z '
set -g status-right-length 50
set -g status-left-length 50

setw -g window-status-current-fg colour170
setw -g window-status-current-bg colour239
setw -g window-status-current-attr bold
setw -g window-status-current-format ' #I#[fg=colour250]:#[fg=colour255]#W#[fg=colour170]#F '

setw -g window-status-fg colour138
setw -g window-status-bg colour235
setw -g window-status-attr none
setw -g window-status-format ' #I#[fg=colour237]:#[fg=colour250]#W#[fg=colour244]#F '

setw -g window-status-bell-attr bold
setw -g window-status-bell-fg colour255
setw -g window-status-bell-bg colour1

set -g message-attr bold
set -g message-fg colour232
set -g message-bg colour166

The main features of this configuration file is:

  • Function keys can be used to switch between sessions
  • ctrl-a is mapped as the TMUX hotkey (yes I come from GNU screen, but tmux is just better)
  • ctrl-a, – makes a horizontal split
  • ctrl-a, | makes a vertical split
  • ctrl-left/right/up/down changes between split windows.
  • Mouse in windows can be used to select a session.

I made a startfile (~/tmux-start) that I refer to from my Putty or MobaXterm

#!/bin/bash

# Make sure tmux shows correct colors
export TERM=xterm-256color

# attach to existing tmux session or create a new session
if ps ax | grep -v grep | grep -v tmux-start | grep tmux > /dev/null
then
   tmux attach
else
   tmux new-session
fi

Now I setup a new session in my MobaXterm like this (important to set the startup command, and the terminal type in order to enable function keys)

tmux-screendump2

tmux-screendump3

My preferred editor is VI – it’s important for me that is has a nice color scheme. I control this by editing ~/.vimrc

syntax on
set t_Co=256

" Fix backgroundcolor for themes. without this its always black
set t_ut=

" load theme from ~/.vim/colors - just put .vim file there and refer to it here without .vim
colorscheme gentooish

To install the theme gentooish:

mkdir ~/.vim
mkdir ~/.vim/colors
wget http://www.vim.org/scripts/download_script.php?src_id=9630 -O ~/.vim/colors/gentooish.vim

And to install a color enabled VI i install VIM:

apt-get install vim

Now I am happy with my working environment 🙂 Example of my VIM:

tmux-screendump4

 

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