.zshrc tmuxinator tease - Saurabh Hirani | Command Line Heroes EP3 - Bengaluru

Описание: Command Line Heroes is a meetup series for developers, SREs, and terminal nerds who love living inside the shell.
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In episode 3 from Bengaluru, Saurabh Hirani (Principal SRE at One2N) walks through a real-world debugging story where Kiro CLI quietly breaks his beloved Tmuxinator setup.
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This talk is a deep dive into how a “simple” autocomplete feature ended up sitting between Ghostty/VS Code, tmux, and zsh, and why things started to go weird: tmux panes showed commands but refused to execute them, shell startup got slower, and mysterious processes began to appear.
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Along the way, Saurabh uses LLMs, exec, and process inspection to peel back the layers and explain what’s really happening inside your terminal sessions.

Ref: https://github.com/saurabh-hirani/tal...

00:00 – Ajay Devgan cold open & Vijay $PATH pun
​00:45 – Intro: who is Saurabh & CHOTU (Chief Head Of Talent Upskilling)
​03:01 – What’s in it for you: a zshrc + Kiro CLI + Tmuxinator debugging story
​03:41 – Primer: Kiro CLI as Amazon’s coding assistant in the terminal
​04:10 – Primer: tmux as a terminal multiplexer (tabs, splits, statusline)
​05:32 – Primer: Tmuxinator for declarative project layouts and sessions
​07:06 – “Something happened”: Tmuxinator starts teasing (commands typed, not run)
​09:21 – The hacky workaround with tmux send-keys and why it feels wrong
​11:01 – Installing Hero CLI autocomplete and the annoying VS Code dropdown
​13:41 – Uninstalling autocomplete: VS Code fixed… and Tmuxinator magically fixed too
​16:20 – Inspecting .zshrc: Hero CLI’s pre/post blocks and generated script
​18:18 – Deep dive: exec vs spawning zsh, PIDs, and why your terminal exits
​21:20 – Visualising process trees with ps and nested shells
​23:12 – Before vs after: Hero CLI term sitting between tmux and zsh
​25:01 – exec -a and renaming processes (the “down top” example)
​27:04 – Hero CLI’s PTY shim and why it must pass stdin through transparently
27:58 – The core bug: intercepting stdin but not replaying all keys for Tmuxinator
​29:34 – Subtle impact: shell startup latency jumps by ~20 ms
​31:02 – Cost vs value: when autocomplete isn’t worth losing tmux workflows
​33:07 – Post-credits: Oh-My-Zsh vs Zim and “feeling” a faster shell
​34:21 – Matrix pun: there is no fork; it was exec all along

CLI Heroes Ep3 was an in person meetup held on 31st Jan 2026, thanks to Smarsh Inc for providing the venue, this is just a small snippet of the things that happened at the meetup. Make sure to follow One2N events on luma to be notified of upcoming events: https://one2n.io/meetups

About One2N: We specialize in back-end and reliability engineering, partnering with startups that have successfully navigated the Zero-to-One chasm and are now poised for rapid growth. Our expertise helps these innovative companies scale efficiently from One-to-N, ensuring their technology infrastructure keeps pace with their business ambitions: https://one2n.io