Tmux

tmux is an open-source Terminal Multiplexer for Unix-like operating systems. It allows multiple terminal sessions to be accessed simultaneously in a single window. It is useful for running more than one command-line program at the same time.

Great way of naming your sessions, and tabs:

I also use session to jump to any folder and open a new folder in a new tmux session.

Shortcuts

• ta Tmux attach
• tn tmux new session from the current session I’m in

Find more information below, or in my dotfiles.ssp.sh:

1
2
3
4
5
6
7
8

alias ide=~/.tmux/ide
alias tmux-session=~/.tmux/tmux-session
alias killtmuxsessions="tmux ls -F'#{session_name}'|egrep '^[0-9]+$'|xargs -I% tmux kill-session -t \"=%\""
alias ta="tmux attach"
# opening a new tmux session from current directory and name it like last part of pwd path
alias tn='tmux new -s `eval echo $(pwd) | sed "s/.*\///"`'
# when closing ranger it will be at the path you were
alias ranger='ranger --choosedir=$HOME/.rangerdir; LASTDIR=`cat $HOME/.rangerdir`; cd "$LASTDIR"'

Tmux is basically my terminal workflow king; it lets me run multiple terminals in a single window. I never, or very rarely, have more than one terminal app open.

If I have a session with multiple tabs, then you can have splits within it. I do as long with new splits until I run out of space. Then I either close splits or open a new tab.

Basically looks like this atm:

With these sessions:

It can get messy, yes, but it works like a charm if you have ingrained it into your mental model.

Using Tmux will add some overhead, but you won’t completely lose Ghostty’s performance benefits because:

1. Ghosty’s core optimizations will still apply:
   • The SIMD escape sequence detection
   • Fast Unicode decoding
   • Pre-computed code point width tables
   • Efficient memory layout
   • Fast rendering pipeline using Metal
2. However, Tmux does introduce an additional layer that:
   • Needs to process escape sequences again
   • Manages its own screen buffer that allows you to serach and navigate your terminal with Vim Motions
     • My favorite use is searching and navigating my terminal’s text with vim motions, something most terminals just starting to implement with search, but navigate you usually can’t.
   • Has its own rendering cycle

by Josh Medeski, a Tmux session manager.

Blog article or GitHub.

For seeing running claude or codex sessions, I use the tmux plugin from Takuya Matsuyama (devaslife) I made a Claude Code session manager for tmux that shows a floating picker overall.

My shortcut is tmux leader + C and looks like this with a nice preview of each agent:

Use Tmux Plugin Manager for installing plugins

Add plugins to tmux.conf like this:

1

set -g @plugin 'accessd/tmux-agent-indicator'

And press Tmux keybind + I or tmux source ~/.tmux.conf (or `tmux source ~/.config/tmux/tmux.conf)

See My Terminal Workflow with MacOS and Linux.

Origin:
References: Terminal, TUIs