A beautiful, high-performance terminal log follower — tail -f with level-aware coloring and a live TUI. Built with Go and the Atlas Suite philosophy.

atlas.tail is a minimalist alternative to tail -f, built for watching logs and traces in real time. It colors lines by severity, dims timestamps, and stays out of your way — no editor chrome, no syntax highlighter trying to parse your JSON.

• Live Follow: Polls the file for appended content and auto-scrolls to the latest line.
• Level-aware coloring: ERROR / WARN / INFO / DEBUG / TRACE lines tint by severity; leading timestamps are dimmed.
• Live rate: Header shows lines/sec alongside total line count and file size.
• Truncation-safe: Detects file truncation/rotation and reloads automatically.
• Pause & Resume: Pause to inspect history; a counter shows how many new lines arrived while paused.
• Line selection & yank: Visual line-mode selection, copy to system clipboard.
• Find: Forward/backward search through the buffered tail, with a match counter.
• Refresh: Ctrl+R re-reads the file from scratch.

gobake build

# Follow a log file interactively (default: last 10 lines, 300 ms polling)
atlas.tail server.log

# Start from the last 200 lines and poll every 100 ms
atlas.tail -N 200 -i 100 server.log

# Show the current tail and exit (no follow)
atlas.tail -F server.log

# Show version
atlas.tail -v

• -N <n> Number of lines to show initially (default 10, 0 for all)
• -i <ms> Poll interval in milliseconds (default 300)
• -l Show line numbers
• -w Wrap long lines
• -F Do not follow; print the tail and exit
• -v Show version

• f Toggle follow on/off (pins cursor to tail when enabled)
• G, end Jump to tail and actively follow
• g, home Jump to top (pauses follow)
• up/down, k/j Move cursor by line (pauses follow)
• pgup/pgdn Page up/down
• / Find
• n / N, p Next / previous match
• v Start / stop line selection; up/down extends
• y Yank selection to clipboard
• Ctrl+C Copy selection (or quit if no selection)
• Ctrl+A Select all
• Ctrl+R Refresh (reload file from disk)
• l Toggle line numbers
• w Toggle line wrapping
• q Quit