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tmux2html – Render full tmux windows or individual panes as HTML

tmux2html

tmux2html captures full tmux windows or individual panes then parses their contents into HTML in living tmux2html - Render full tmux windows or individual panes as HTML . The output can either be still snapshots, or animated sequences.

With a web server that uses gzip compression, the size over the network is negligible for reasonably sized windows or panes.

Examples

Some of these may be large in dimensions. You’ll need to zoom out if you want to see all panes at once.

If you decide to look at the telnet animations yourself and don’t know how to exit, use Ctrl-] then type quit . For the Star Wars animation, press Ctrl-]<enter> to get the prompt.

Rationale

This was a weekend project I made for fun and I have no particular use for it beyond annoying my friends about how bad they should feel for not using tmux. I also thought it would be neat to have a render of my sessions that didn’t result in an image using some crummy font on a headless server.

I suppose you can use cron to capture screens and display it on your website, or use it to create terminal snippets for your blog. You could also load a pane render in elinks within your coworker’s session. The only limit is your imagination, my friend. tmux2html - Render full tmux windows or individual panes as HTML

Requirements

  • tmux 1.8
  • Python 2.7 or 3.4 (could be wrong since it’s not tested in lower versions)

Installation

pip install tmux2html

Usage

tmux2html 4 -o window_5_in_current_session.html tmux2html .0 -o first_pane_in_current_window.html tmux2html other:1.2 -o second_window_third_pane_in_other_session.html

Command Line Options

  • target (positional) – Target window or pane. Uses tmux’s target syntax, but always 0-indexed. (e.g. sess:1.2 – Session – sess, Window 2, Pane 3. Default target is window.)
  • -o , --output – Output file. Prints to stdout if omitted.
  • -m , --mode – Output file permissions. Default – 644
  • --light – Light background.
  • --interval – Number of seconds between captures.
  • --duration – Number of seconds to capture. 0 for indefinite recording, -1 to disable.
  • --stream – Continuously renders until stopped and adds a script to auto refresh based on --interval . See the notes below for more info.
  • --fg – Foreground color. Can be a color index or R,G,B
  • --bg – Background color. Can be a color index or R,G,B
  • --full – Renders the full history of a single pane

Limitations

  • The cursor is not displayed.
  • Basic colors will not match your terminal’s configured colors.
  • Animations aren’t perfect with a lot of splits and fast resizing.
  • Animations won’t capture scrolling the pane’s history (selection mode).
  • In animations, a pane is updated with the full pane’s content.
  • Zoomed panes will ruin all the fun.
  • Your imagination tmux2html - Render full tmux windows or individual panes as HTML

Notes

  • Still captures are plain HTML and CSS.
  • Animations use Javascript.
  • To keep the size reasonable with animations,pako is used to inflate the gzipped frame contents. Combined with decompression of frame content, the animations will use a fair amount of CPU. So, you shouldn’t run animations indefinitely on your low performance or battery operated fun machines.
  • --stream doesn’t actually "stream", per se. It keeps writing to the same file and adds a script that reloads the contents. This can be used to have a live feed of a window or pane. However, it’s not elegant. If you set the interval to too low, your might unintentionally DDoS your own web server. Caveat Emptor.
  • The font stack includesPowerline andNerd fonts because I’m pedantic and want to see those fancy glyphs. It falls back to monospace if you don’t have any of those fonts installed. The caveat: if you have more than one of those fonts installed, the first one in the font stack might not be your favorite and you’ll be forced to set your monitor on fire and buy a new one.

To Do

  • If there’s practical use for animations in the future, only lines that are different should be updated to keep the size low.

License

  • tmux2html: MIT
  • pako: MIT

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