DQCON

dqcon is a modern remake of qcon, a powerful, cross-platform terminal client for kdb+/q. It provides a modern TUI (Terminal User Interface) experience with features designed for high productivity, such as connection list, persistent session history, multi-line editing, and command repetition.

Features

Current features:

• Modern TUI: Built with Rust, Ratatui, and Crossterm for a responsive and visually clear interface.
• Cross-Platform: Native binaries for Linux, Windows, and macOS (Intel and ARM).
• Async interaction: You don't need to wait for a command to finish to get a prompt again.
• Multi-line Editing: Support for complex queries with newline insertion (Ctrl+N).
• Text selection/clipboard: Select and copy/paste text using keyboard or mouse.
• Persistent sessions: Preserve command history and last results across sessions using -m mode.
• Command repetition: Periodically execute commands (e.g., monitoring a table) with configurable delays (Ctrl+R).
• Simple Mode: A basic REPL mode (-s) for use in environments without full TUI support.

Planned features:

• Code completion
• Syntax highlighting of queries
• Tree view of namespaces and dictionaries
• Function loading and editing

Usage

Run the executable with the connection string as an argument

dqcon [-m] [host]:port[:user[:pass]]

or just run

dqcon [-m]

and type or select a recently used connecton address in the TUI.

Options

• -m: Enables persistent session history. Data is saved in $HOME/.dqcon/.
• -s: Launches in standard REPL mode instead of the TUI.
• -v: Shows version info
• -h: Shows basic usage info

Key Bindings (TUI)

• Enter: Run current command
• Up/Down: Navigate command history
• Shift+Arrows: Select text in command
• Shift+Home/End: Extend selection to start/end
• Mouse Left Click/Drag: Select text in results
• Mouse Right Click: Paste from clipboard
• Ctrl+C: Copy command/result selection (or full command if no selection)
• Ctrl+X: Cut selection or exit app
• Ctrl+V: Paste from clipboard
• Ctrl+N: Insert newline
• Ctrl+R: Open repeat menu (periodic execution)
• Ctrl+D: Delete the current command from history
• Ctrl+H: Select connection
• Ctrl+Q: Show help dialog

Installation

Download the zipped binary for your architecture from the releases page and move it to your PATH.

For example:

unzip dqcon-linux-amd64.zip -d ~/.local/bin/

Linux/GLIBC Compatibility

All the Linux binaries are distribution agnostic, and they should run on almost any Linux distribution without any issues. 🤞 dqcon is tested and runs correctly even on ancient distros like Centos 5 (GLIBC 2.5) and Centos 6 (GLIBC 2.12).

Building

The project uses a containerized build system to ensure consistency of the build process and to avoid installing toolchains on the developer's machine.

Prerequisites

• Docker
• make

Build Targets

To build for linux/arm64 (default):

make

To build for all supported platforms (Linux, Windows, macOS on x86_64 and aarch64):

make cross

Donations

If you like this app, please consider supporting the author with a donation in any currency/coin:

• Revolut: @andrasdotsch
• Bitcoin: bc1qfanp6jt8rnrw9zjpc4pwpsd3x552rathjrmecw
• Ethereum (and L2/EVM chains): 0xf780b169E2177d13938355bF5abE796575C1003E
• XRP: rPthpv7Ex7CGPc28rVKtfzazgM2MxcketY
• Solana: 21gwoU51YPRD29vpsRYKyvNJ6xEtJSXdM7LPXrG63RtA
• Dogecoin: D8eSvpNkaAfhyFhxyXcaTXsVAMgERsAico
• Zcash: t1L1ncvwaCQhp6yziDtcrWrd7vquioswNxC

License

MIT