A cross-platform graphical process/system monitor with a customizable interface and a multitude of features. Supports Linux, macOS, and Windows. Inspired by both gtop and gotop.

Theme based on gruvbox (--color gruvbox). Font is IBM Plex Mono, terminal is Kitty.

Note: If you are reading this on the master branch, then it may refer to in-development or un-released features/changes. Please refer to release branch or crates.io for the most up-to-date release documentation.

• Support
  • Compatibility
  • Other known platform-specific issues
• Installation
  • Manually
  • Cargo
  • AUR
  • Debian (and Debian-based)
  • Fedora/CentOS
  • Gentoo
  • Nix
  • Homebrew
  • Scoop
  • Chocolatey
  • winget
  • Auto-completion
• Usage
  • Flags
• Keybindings
  • General
  • Process bindings
  • Process search bindings
  • Process sort bindings
  • Battery bindings
  • Process searching keywords
    • Supported keywords
    • Supported comparison operators
    • Supported logical operators
    • Supported units
• Mousebindings
  • General
  • CPU bindings
• Features
  • Processes
    • Process searching
    • Process sorting
    • Tree mode
  • Zoom
  • Expanding
  • Basic mode
  • Config files
    • Config flags
    • Theming
    • Layout
    • Disk and temperature filtering
  • Battery
• FAQ
• Contribution
  • Contributors
• Thanks

Note that bottom is:

• Built and released using the most recent stable version of Rust
• Officially supports:
  • macOS (x86_64)
  • Linux (x86_64, i686, aarch64)
  • Windows (x86_64, i686)

Operating systems, versions of Rust, or platforms that are outside of this list are not currently officially supported - even if it is built, tested, or works - and I may not be able to fix bugs for these!

The current compatibility of widgets with operating systems from personal testing:

• M1-based macOS devices may have issues with temperature sensors not returning anything.

• For now, WSL has an issue reporting total memory usage.

• WSL and WSL2 (as far as I know) cannot correctly report temperature sensors.

• WSL2 will not match Windows' own Task Manager, this appears to be due to how WSL2 works.

There are a few ways to go about doing this manually. If you do so, please build using the current stable release of Rust. For example:

# If required, update Rust on the stable channel
rustup update stable

# Clone and install the newest master version all via Cargo
cargo install --git https://github.com/ClementTsang/bottom

# Clone from master and install manually
git clone https://github.com/ClementTsang/bottom
cd bottom
cargo install --path .

# Download from releases and install
curl -LO https://github.com/ClementTsang/bottom/archive/0.5.6.tar.gz
tar -xzvf 0.5.6.tar.gz
cargo install --path .

Or, you can just download the binary from the latest release.

# If required, update Rust on the stable channel
rustup update stable

cargo install bottom

# OR, --locked may be required due to how cargo install works
cargo install bottom --locked

Normal package found here, binary package found here:

yay -S bottom

# If you instead want a pre-built binary:
yay -S bottom-bin

A .deb file is provided on each release:

curl -LO https://github.com/ClementTsang/bottom/releases/download/0.5.6/bottom_0.5.6_amd64.deb
sudo dpkg -i bottom_0.5.6_amd64.deb

Available in COPR:

sudo dnf copr enable atim/bottom -y
sudo dnf install bottom

Available in dm9pZCAq overlay

sudo eselect repository enable dm9pZCAq
sudo emerge --sync dm9pZCAq
sudo emerge sys-process/bottom::dm9pZCAq

nix-env -i bottom

brew tap clementtsang/bottom
brew install bottom

# If you need to be more specific, use:
brew install clementtsang/bottom/bottom

scoop install bottom

Choco package located here. Since you cannot upload a new package while a previous one is being validated, the newest version of a release may take a while to appear.

choco install bottom

# Version number may be required for newer releases, if available:
choco install bottom --version=0.5.6

You can find the packages here. Since validation of the package takes time, it may take a while to become available after a release.

winget install bottom

You can also manually do the same thing by going to the latest release and installing via the .msi file.

You can uninstall via Control Panel or Options in Windows.

Shell completions are included in binary releases, and are generated in the same directory as the binary if bottom is manually built.

• For bash, move btm.bash to $XDG_CONFIG_HOME/bash_completion or /etc/bash_completion.d/.
• For fish, move btm.fish to $HOME/.config/fish/completions/.
• For zsh, move _btm to one of your $fpath directories.
• For PowerShell, add . _btm.ps1 to your PowerShell profile.

Some install scripts (i.e. AUR) will automatically do this for you.

Run using btm.

Use btm --help for more information.

        --autohide_time                        Temporarily shows the time scale in graphs.
    -b, --basic                                Hides graphs and uses a more basic look.
        --battery                              Shows the battery widget.
    -S, --case_sensitive                       Enables case sensitivity by default.
    -c, --celsius                              Sets the temperature type to Celsius.
        --color <COLOR SCHEME>                 Use a color scheme, use --help for supported values.
        --process_command                         Show processes as their commands by default.
    -C, --config <CONFIG PATH>                 Sets the location of the config file.
    -u, --current_usage                        Sets process CPU% to be based on current CPU%.
    -t, --default_time_value <MS>              Default time value for graphs in ms.
        --default_widget_count <INT>           Sets the n'th selected widget type as the default.
        --default_widget_type <WIDGET TYPE>    Sets which widget type to use as the default widget.
        --disable_click                        Disables mouse clicks.
    -m, --dot_marker                           Uses a dot marker for graphs.
    -f, --fahrenheit                           Sets the temperature type to Fahrenheit.
    -g, --group                                Groups processes with the same name by default.
    -h, --help                                 Prints help information.  Use --help for more info.
    -a, --hide_avg_cpu                         Hides the average CPU usage.
        --hide_table_gap                       Hides the spacing between table headers and entries.
        --hide_time                            Completely hides the time scaling.
    -k, --kelvin                               Sets the temperature type to Kelvin.
    -l, --left_legend                          Puts the CPU chart legend to the left side.
        --mem_as_value                         Defaults to showing process memory usage by value.
    -r, --rate <MS>                            Sets a refresh rate in ms.
    -R, --regex                                Enables regex by default.
        --show_table_scroll_position           Shows the scroll position tracker in table widgets
    -d, --time_delta <MS>                      The amount in ms changed upon zooming.
    -T, --tree                                 Defaults to showing the process widget in tree mode.
        --use_old_network_legend               DEPRECATED - uses the older network legend.
    -V, --version                              Prints version information.
    -W, --whole_word                           Enables whole-word matching by default.

• None of the keywords are case sensitive.
• Use brackets to logically group together parts of the search.
• Furthermore, if you want to search a reserved keyword, surround the text in quotes - for example, "or" or "(sd-pam)" would be a valid search:

Note that the and operator takes precedence over the or operator.

As yet another process/system visualization and management application, bottom supports the typical features:

• CPU usage visualization, on an average and per-core basis

• RAM and swap usage visualization

• Network visualization for receiving and transmitting, on a log-graph scale

• Display information about disk capacity and I/O per second

• Display temperatures from sensors

• Display information regarding processes, like CPU, memory, I/O usage, and process state

• Process management (well, if process killing is all you need)

It also aims to be:

• Lightweight

• Cross-platform - supports 64-bit Linux, Windows, and macOS

In addition, bottom also currently has the following features:

On any process widget, hit / to bring up a search bar. If the layout has multiple process widgets, note this search is independent of other widgets.

By default, just typing in something will search by process name:

This simple search can be refined by matching by case, matching the entire word, or by using regex:

Now let's say you want to search for two things - luckily, we have the AND and OR logical operators:

Furthermore, one is able to refine their searches by CPU usage, memory usage, PID, and more. For example:

You can see all available keywords and query options here.

You can sort the processes list by any column you want by pressing s while on a process widget:

Use t or F5 to toggle tree mode in a process widget. This is somewhat similar to htop's tree mode.

Sorting works as well, but it is done per groups of siblings. For example, by CPU%:

You can also still filter processes. Branches that entirely do not match the query are pruned out, but if a branch contains an element that does match the query, any non-matching elements will instead just be greyed out, so the tree structure is still maintained:

Using the +/- keys or the scroll wheel will move the current time intervals of the currently selected widget, and = to reset the zoom levels to the default. Widgets can hold different time intervals independently. These time intervals can be adjusted using the -t/--default_time_value and -d/--time_delta options, or their corresponding config options.

Only care about one specific widget? You can go to that widget and hit e to make that widget expand and take up the entire drawing area. You can minimize this expanded widget with Esc or pressing e again.

Using the -b or --basic_mode (or their corresponding config options) will open bottom in basic mode. There are no charts or expanded mode when using this, and tables are condensed such that only one table is displayed at a time.

Note custom layouts are currently not available when this is used.

bottom supports reading from a config file to customize its behaviour and look. By default, bottom will look at (based on dirs):

Note that if a config file does not exist at either the default location or the passed in location via -C or --config, one is automatically created with no settings applied.

The following options can be set under [flags] to achieve the same effect as passing in a flag on runtime. Note that if a flag is given, it will override the config file.

These are the following supported flag config values, which correspond to the flag of the same name described in Flags:

The config file can be used to set custom colours for parts of the application under the [colors] object. The following labels are customizable with strings that are hex colours, RGB colours, or specific named colours.

Supported named colours are one of the following strings: Reset, Black, Red, Green, Yellow, Blue, Magenta, Cyan, Gray, DarkGray, LightRed, LightGreen, LightYellow, LightBlue, LightMagenta, LightCyan, White.

bottom supports customizable layouts via the config file. Currently, layouts are controlled by using TOML objects and arrays.

For example, given the sample layout:

[[row]]
  [[row.child]]
  type="cpu"
[[row]]
    ratio=2
    [[row.child]]
      ratio=4
      type="mem"
    [[row.child]]
      ratio=3
      [[row.child.child]]
        type="temp"
      [[row.child.child]]
        type="disk"

This would give a layout that has two rows, with a 1:2 ratio. The first row has only the CPU widget. The second row is split into two columns with a 4:3 ratio. The first column contains the memory widget. The second column is split into two rows with a 1:1 ratio. The first is the temperature widget, the second is the disk widget.

This is what the layout would look like when run:

Each [[row]] represents a row in the layout. A row can have any number of child values. Each [[row.child]] represents either a column or a widget. A column can have any number of child values as well. Each [[row.child.child]] represents a widget. A widget is represented by having a type field set to a string.

The following type values are supported:

Each component of the layout accepts a ratio value. If this is not set, it defaults to 1.

For an example, look at the default config, which contains the default layout.

Furthermore, you can have duplicate widgets. This means you could do something like:

[[row]]
  ratio=1
  [[row.child]]
  type="cpu"
  [[row.child]]
  type="cpu"
  [[row.child]]
  type="cpu"
[[row]]
  ratio=1
  [[row.child]]
  type="cpu"
  [[row.child]]
  type="empty"
  [[row.child]]
  type="cpu"
[[row]]
  ratio=1
  [[row.child]]
  type="cpu"
  [[row.child]]
  type="cpu"
  [[row.child]]
  type="cpu"

and get the following CPU donut:

You can hide specific disks, temperature sensors, and networks by name in the config file via disk_filter, temp_filter, and net_filter respectively. Regex (regex = true), case-sensitivity (case_sensitive = true), and matching only the entire word (whole_word = true) are supported, but are off by default.

For example, let's say , given this disk list:

I wish to only show disks that follow the form /dev/sda\d+, or /dev/nvme0n1p2:

[disk_filter]
is_list_ignored = false
list = ["/dev/sda\\d+", "/dev/nvme0n1p2"]
regex = true

This would ignore anything that does not match either of these two conditions. If I instead wish to ignore anything that matches this list, then I can set is_list_ignored = true instead:

Likewise, I can do something similar for temp_filter:

If I, say, only wanted to see any entry with the words "cpu" or "wifi" in it, case sensitive:

[temp_filter]
is_list_ignored = false
list = ["cpu", "wifi"]
case_sensitive = true

Now, flipping to case_sensitive = false would instead show:

Lastly, let's say I want to filter out exactly "iwlwifi_1" from my results. I could do:

[temp_filter]
is_list_ignored = true
list = ["iwlwifi_1"]
case_sensitive = true
whole_word = true

This will match the entire word, "iwlwifi_1", and ignore any result that exactly matches it:

You can get battery statistics (charge, time to fill/discharge, consumption in watts, and battery health) via the battery widget.

Since this is only useful for devices like laptops, it is off by default. You can either enable the widget in the default layout via the --battery flag, or by specifying the widget in a layout:

Please see the FAQ for answers to frequently asked questions.

Contribution is always welcome! Please take a look at CONTRIBUTING.md for details on how to help.

Thanks to all contributors (emoji key):

Marcin Wojnarowski 💻 📦	Mahmoud Al-Qudsi 💻	Andy 💻	Kim Brose 💻	Sven-Hendrik Haase 📖	Artem Polishchuk 📦 📖	Trung Lê 📦 🚇
dm9pZCAq 📦 📖	Lukas Rysavy 💻

• This project is very much inspired by gotop, its successor ytop, and gtop.

• Basic mode is heavily inspired by htop's design.

• This application was written with many, many libraries, and built on the work of many talented people. This application would be impossible without their work. I used to thank them all individually but the list got too large...

• And of course, thanks to all contributors!