lsu

lsu is a Rust terminal UI for viewing systemd service units and their journal.

Dependencies

• any GNU/Linux system with systemd obviously
• systemctl and journalctl available in $PATH
• Some current Rust stable toolchain (Rust 2024 edition, Cargo)

Core crates: ratatui, crossterm, serde, serde_json, anyhow.

Installation

Helpers exist for Arch and Gentoo-based systems but you can install also via crates.io or from source directly.

Archlinux

See PKGBUILD

Gentoo

See lsu-9999.ebuild

Cargo Crates

cargo install lsu

From Source

Build from source:

git clone https://github.com/l5yth/lsu.git
cd lsu
cargo build --release

Run the built binary:

./target/release/lsu

Or run directly in development:

cargo run --release --

Usage

lsu v0.1.2
apache v2 (c) 2026 l5yth

Usage: lsu [OPTIONS]

Show systemd services in a terminal UI.
By default only loaded and active units are shown.

Options:
  -a, --all            Shorthand for --load all --active all --sub all
      --load <value>   Filter by load state (all, loaded, stub, not-found, bad-setting, error, merged, masked)
      --active <value> Filter by active state (all, active, reloading, inactive, failed, activating, deactivating, maintenance, refreshing)
      --sub <value>    Filter by sub state (all, running, exited, dead, failed, start-pre, start, start-post, auto-restart, auto-restart-queued, dead-before-auto-restart, condition, reload, reload-post, reload-signal, reload-notify, stop, stop-watchdog, stop-sigterm, stop-sigkill, stop-post, final-sigterm, final-sigkill, final-watchdog, cleaning)
      --sort <value>   Sort order for the list view (auto, name, status) auto (default): status when all filters are 'all', name otherwise
  -u, --user           Show units in user instead of system scope
  -h, --help           Show this help text
  -v, --version        Show version and copyright

Examples:

lsu
lsu --all
lsu --user
lsu --user --all
lsu --load failed
lsu --active inactive
lsu --sub exited
lsu --load loaded --active inactive --sub dead
lsu --user --load loaded --active active --sub running

In-app keys:

• q: quit
• r: refresh now
• ↑ / ↓: move selection in service unit list
• l or enter: open detailed logs for selected service
• Log view: ↑ / ↓ scroll logs, b or esc return to list

Development

cargo check
cargo test --all --all-features --verbose
cargo fmt --all
cargo clippy --all-targets --all-features -D warnings