loghew (beta)

A TUI log viewer built with Rust.

Install

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/nehadyounis/loghew/releases/latest/download/loghew-installer.sh | sh

Or build from source:

git clone https://github.com/nehadyounis/loghew.git
cd loghew
cargo install --path .

Or use portage if you are a Gentoo user — via the Masterwolf overlay

add Masterwolf repository eselect repository enable masterwolf, then:

emerge --sync   # if needed
emerge --ask app-admin/loghew

Usage

loghew server.log          # open a log file
loghew +100 server.log     # open and jump to line 100
cat app.log | loghew       # pipe from stdin
loghew -s "error" app.log  # open with a search

Commands

Type / in the viewer to access commands:

Command	Description
/search	Case-insensitive text search
/regex /r	Regex search
/filter /fi	Filter lines (e.g. /fi ERROR !debug)
/time /t	Jump to time (/t 14:30, /t -5m)
/go /g	Go to line or bookmark
/bookmark /b	Bookmark current line
/bookmarks /bs	List bookmarks
/follow /f	Tail mode — auto-scroll on new lines
/notify /n	Desktop notification on pattern match
/delta /d	Show time deltas between lines
/color /c	Color lines by log level
/wrap /w	Toggle line wrapping
/config	Edit settings (theme, scroll speed, etc.)

Features

• Large file support — memory-mapped I/O for files over 10MB, lazy line indexing
• Search & filter — literal and regex search, multi-condition filters with negation
• Time navigation — auto-detects timestamps, jump by absolute or relative time
• Bookmarks — name them, list them, jump between them
• Notifications — watch for patterns and get desktop alerts on new matches
• Themes — dracula, nord, gruvbox, monokai, solarized, catppuccin, tokyo-night
• Mouse support — click, drag to select, copy to clipboard
• Tail mode — follow growing log files in real time
• Stdin — pipe logs directly into loghew

Config

Settings live in ~/.config/loghew/config.toml:

[general]
scroll_speed = 3
line_numbers = true
mouse = true
theme = "dracula"
wrap = false
semantic_color = false

[colors]
error = "#ff5555"
warn = "yellow"
info = "cyan"
debug = "magenta"
trace = "gray"

License

MIT