bottom

bottom (invoked as btm) is a feature-rich, cross-platform system monitor for the terminal. It provides an at-a-glance overview of your system's CPU, memory, disk, network, and process activity in a clean, interactive TUI — think htop, but more visually polished and highly configurable.

Features

• Multi-widget layout — simultaneously view CPU usage, memory, disk I/O, network throughput, and process list
• Responsive and resizable — layout adapts to your terminal size; widgets can be navigated with the keyboard
• Filtering — filter the process list in real time by name or command
• Sorting — sort processes by CPU, memory, PID, name, and more
• Grouped mode — group processes by name to see aggregate resource usage
• Battery info — optionally display battery charge and status
• Highly configurable — tweak colours, default widgets, update rate, temperature units, and more via a TOML config file
• Cross-platform — works on Linux, macOS, and Windows

Installation

cargo install bottom --locked

Or via your package manager:

# macOS
brew install bottom

# Arch Linux
pacman -S bottom

# Debian / Ubuntu
apt install bottom

# Fedora
dnf install bottom

# Nix
nix-env -iA nixpkgs.bottom

Usage

# Launch with default layout
btm

# Use a basic, more htop-like mode
btm --basic

# Set the update rate to 500ms (default is 1000ms)
btm --rate 500

# Show temperature in Fahrenheit
btm --fahrenheit

# Launch with a specific config file
btm --config ~/.config/bottom/bottom.toml

Keybindings

Configuration

bottom reads from ~/.config/bottom/bottom.toml. A minimal example:

[flags]
rate = 500          # update every 500ms
temperature_type = "celsius"
default_widget_type = "proc"

[colors]
table_header_color = "LightBlue"
selected_text_color = "Black"
selected_bg_color = "Cyan"