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bottom

Build Status crates.io link

A graphical top clone, written in Rust. Inspired by both gtop and gotop.

Quick demo recording Terminal: Kitty Terminal, Font: IBM Plex Mono, OS: Arch Linux

Features

Features of bottom include:

  • CPU widget to show a visual representation of per-core usage. Average CPU display also exists.

  • Memory widget to show a visual representation of both RAM and SWAP usage.

  • Networks widget to show a log-based visual representation of network usage.

  • Sortable and searchable process widget. Searching supports regex, and you can search by PID and process name.

  • Disks widget to display usage and I/O per second.

  • Temperature widget to monitor detected sensors in your system.

  • Config file support for custom colours and default options.

  • Maximizing of widgets of interest.

Details about each widget can be found here.

The compatibility of each widget and operating systems are, as of version 0.1.0, as follows:

OS CPU Memory Disks Temperature Processes Networks
Linux (tested on Arch Linux)
Windows (tested on Windows 10)
macOS (tested on macOS Catalina)

Installation

In all cases you can install the in-development version by cloning and using cargo build --release. Note this is built and tested with Rust Stable (1.41.0 as of writing). You can also get release versions using cargo install bottom, or manually building from the Releases page by downloading and building.

Linux

Other installation methods based on distros are as follows:

Arch Linux

You can get the release versions from the AUR by installing bottom.

Ubuntu

TBD

Windows

I advise running the program with the --dot_marker or -m option, as the braille font seems to not work out of the box on Powershell. You may need to install a font like FreeMono and use a terminal like cmder for font support to work properly, unfortunately.

I plan to add a Chocolatey install option in the future.

macOS

macOS seems to work fine for the most part, barring minor issues with the Ctrl-arrow key bindings (use Shift instead). I plan to add a Homebrew install option in the future.

Usage

Run using btm.

Command line options

  • -h, --help shows the help screen and exits.

  • -a, --avg_cpu enables also showing the average CPU usage in addition to per-core CPU usage.

  • -m, --dot-marker uses a dot marker instead of the default braille marker.

  • Temperature units (you can only use one at a time):

    • -c, --celsius displays the temperature type in Celsius. This is the default.

    • -f, --fahrenheit displays the temperature type in Fahrenheit.

    • -k, --kelvin displays the temperature type in Kelvin.

  • -v, --version displays the version number and exits.

  • -r <RATE>, --rate <RATE> will set the refresh rate in milliseconds. Lowest it can go is 250ms, the highest it can go is 2128 - 1. Defaults to 1000ms, and lower values may take more resources due to more frequent polling of data, and may be less accurate in some circumstances.

  • -l, --left_legend will move external table legends to the left side rather than the right side. Right side is default.

  • -u, --current_usage will make a process' CPU usage be based on the current total CPU usage, rather than assuming 100% CPU usage.

  • -g, --group will group together processes with the same name by default (equivalent to pressing Tab).

  • -S, --case_sensitive will default to matching case.

  • -W, --whole will default to searching for the world word.

  • -R, --regex will default to using regex.

  • --cpu_default, --memory_default, --disk_default, --temperature_default, --network_default, --process_default will select the corresponding widget on startup. By default the process widget is selected.

  • -C, --config takes in a file path leading to a TOML file.

Config Files

The ability to use config files is supported by bottom to set boot flags by default, and set colour options. See this document for more details.

See this config for an example.

Keybindings

General

  • q, Ctrl-c to quit. Note if you are currently in the search widget, q will not work so you can still type.

  • Ctrl-r to reset the screen and reset all collected data.

  • f to freeze the screen from updating with new data. Press f again to unfreeze. Note that monitoring will still continue in the background.

  • Ctrl/Shift-arrow or H/J/K/L to navigate between widgets. Note that on macOS, Ctrl-arrow keys seem to conflict with an existing macOS binding, use Shift-arrow key or H/J/K/L instead.

  • Esc to close a dialog window or exit maximized mode.

  • ? to get a help screen explaining the controls. Note all controls except Esc to close the dialog will be disabled while this is open.

  • Enter on a widget to maximize the widget.

Scrollable Tables

  • Up or k and Down or j scrolls through the list if the widget is a table (Temperature, Disks, Processes).

  • gg or Home to jump to the first entry of the current table.

  • G (Shift-g) or End to jump to the last entry of the current table.

Processes

  • dd to kill the selected process

  • c to sort by CPU usage. Sorts in descending order by default. Press again to reverse sorting order.

  • m to sort by memory usage. Sorts in descending order by default. Press again to reverse sorting order.

  • p to sort by PID. Sorts in ascending order by default. Press again to reverse sorting order.

  • n to sort by process name. Sorts in ascending order by default. Press again to reverse sorting order.

  • Tab to group together processes with the same name. Disables PID sorting. dd will now kill all processes covered by that name.

  • Ctrl-f or / to open the search widget.

Search Widget

  • Tab to switch between searching for PID and name respectively.

  • Alt-c to toggle ignoring case.

  • Alt-m to toggle matching the entire word.

  • Alt-r to toggle using regex.

  • Ctrl-a and Ctrl-e to jump to the start and end of the search bar respectively.

  • Esc to close.

  • Left and Right arrow keys to move the cursor within the search bar.

Note that q is disabled while in the search widget.

Mouse actions

  • Scrolling with the mouse will scroll through the currently selected list if the widget is a scrollable table.

Thanks, kudos, and all the like