r-top is a terminal-based, Rust-powered system resource viewer for UNIX-like systems. Inspired by tools like bashtop and htop, b-top provides a visually impressive process monitoring and management tool with shader-like implementations by using TachyonFX.

• Per-Core CPU Usage: Real-time usage display for each CPU core with color-coded indicators.
• CPU Usage Graph: Sparkline graph showing historical average CPU usage.
• Memory Monitoring: Visual gauge showing used vs. total memory in GB.
• Network Stats: Displays RX/TX bytes for interfaces like eth0 and lo.
• Process Table: Sortable list of top processes by CPU, memory, or network usage (WIP).
• Smooth Animations: Powered by tachyonfx for subtle UI transitions.
• Keyboard Navigation: Scroll, jump, sort, and switch interfaces with intuitive keybindings.
• Disk Usage: Track disk usage with a visual gauge and switch between disks for active monitoring.
• Tree View: See parent and child processes for each running/sleeping process.
• Search Filter: Filter and find specific processes in the process table
• Daemon Supervisor: Create your own service profiles to run a b-daemon in either integrated or active modes

• Rust
• ratatui – Terminal UI rendering
• sysinfo – System information
• crossterm – Terminal input handling
• tachyonfx – Animation effects

• Rust toolchain (cargo, rustc)
• A UNIX-like OS (Linux, macOS)

git clone https://github.com/asian-mario/r-top.git
cd r-top
cargo run --release

wget https://github.com/asian-mario/r-top/releases/download/[VERSION]/r-top-linux-x86_64.tar.gz
tar -xzf r-top-linux-x86_64.tar.gz
sudo mv r-top /usr/local/bin/

$$\                     $$\                                                       
$$ |                    $$ |                                                      
$$$$$$$\           $$$$$$$ | $$$$$$\   $$$$$$\  $$$$$$\$$$$\   $$$$$$\  $$$$$$$\  
$$  __$$\ $$$$$$\ $$  __$$ | \____$$\ $$  __$$\ $$  _$$  _$$\ $$  __$$\ $$  __$$\ 
$$ |  $$ |\______|$$ /  $$ | $$$$$$$ |$$$$$$$$ |$$ / $$ / $$ |$$ /  $$ |$$ |  $$ |
$$ |  $$ |        $$ |  $$ |$$  __$$ |$$   ____|$$ | $$ | $$ |$$ |  $$ |$$ |  $$ |
$$$$$$$  |        \$$$$$$$ |\$$$$$$$ |\$$$$$$$\ $$ | $$ | $$ |\$$$$$$  |$$ |  $$ |
\_______/          \_______| \_______| \_______|\__| \__| \__| \______/ \__|  \__|
                                                                                  

The r-top daemon (or b-daemon) active and integrated modes use a TOML configuration file to define the services you want to monitor and manage, the configuration file is automatically created at ~/.config/r-top/services.toml when you first run r-top -d. The integrated mode is still highly experimental, the daemon may run even when r-top is shut down. Please use it at your own risk.

• Linux/macOS: ~/.config/r-top/services.toml
• Custom location: Use r-top -d -c /path/to/your/config.toml

Each service is defined in the [[services]] array with the following fields

[[services]]
name = "my-service"                    # Unique service name
command = "/usr/bin/python3"           # Executable path
args = ["app.py", "--port", "8080"]    # Command arguments
working_dir = "/home/user/myapp"       # Optional working directory
restart_policy = "always"             # Restart behavior: always, on_failure, never
max_restarts = 5                       # Maximum restart attempts
restart_delay_secs = 10                # Seconds to wait before restart

b-daemon has multiple restart policies depending on how you want to treat the service you are monitoring

• always: Restart the service whenever it stops
• on_failure: Only restart if the service exits with a non-zero status code
• never: Never automatically restart the service

If you are struggling on how to set up your services.toml (or other custom configuration files) look at the examples within ./example-services/

# HTTP service health check
curl -f http://localhost:8080/health

# Process existence check
pgrep -f "my-service"

# File freshness check (modified within last 5 minutes)
find /path/to/output -mmin -5 | grep -q output

# Database connection check
pg_isready -h localhost -p 5432

# Docker container health
docker exec container-name health-command

# Log file activity (new entries in last 2 minutes)
find /var/log/myapp.log -mmin -2 | grep -q myapp.log

MIT License

Thanks to ratatui and TachyonFX repositories for maintaining their projects for for the UI animations.