tmux-cpu

Display CPU usage in your tmux status bar or in the terminal.

Installation

Install Node, then use npm:

sudo npm install -g tmux-cpu

Usage

Usage: tmux-cpu

Options:

--ascii         Display ASCII percentage bar ([======   ] instead of [▆])
--width <int>   The width of the ASCII bar, default: 10.
--format <str>  Use a custom formatting string.
--no-color      Disable colors.
--help          Show help.
--version       Show version.

Custom formatting:

The default formatting string is '#[fg=:color][:spark] :load :percent #[default][:spark5] :load5 :percent5 #[fg=black,bold][:spark15] :load15 :percent15'.

You can use these tokens in the custom formatting string:

• :load: Load average for the past minute.
• :load5: Load average for the past 5 minutes.
• :load15: Load average for the past 15 minutes.
• :percent, :percent5, :percent15: CPU usage % for the past minute.
• :bar, :bar5, :bar15: ASCII progress bar, CPU %.
• :spark, :spark5, :spark15: the utf-8 spark line graphic
• :color, :color5, :color15: a color (red, yellow, green) representing the percentage used (adaptive based on the percentage)

Load percentages are calculated simply by dividing load average by the number of cpus.

Colors in the format string:

tmux uses a custom format for specifying colors, which is different from the set of codes used in the terminal. For compatibility, tmux-cpu also uses the same format: #[attributes]

where attributes are a comma-separated list of 'fg=color' and 'bg=color', for example:

#[fg=yellow,bold]Yellow bold#[default] Gray

Attributes may a comma-delimited list of one or more of: bright (or bold), dim, underscore, blink, reverse, hidden, or italics.

Color may be one of: black, red, green, yellow, blue, magenta, cyan, white, default, colour0 to colour255. Newer tmux versions also support RGB strings such as #ffffff. See man tmux for more info.

tmux-cpu also converts these strings to the appropriate TTY color codes for the terminal.

Integrating with tmux

Make sure you have enabled utf-8 in the status line, either via set -g status-utf8 on in ~/.tmux.conf or by running tmux with the -u flag: tmux -u.

Add the following line to your ~/.tmux.conf file:

set -g status-right "#(/usr/local/bin/tmux-cpu)"

reload the tmux config by running tmux source-file ~/.tmux.conf.