tre

A replacement for tree command that uses git ls-files as source of file when possible.

tre can also create shell aliases that, when executed, opens the file associated with it with the default editor. Here's that function in action:

… in case you missed it: "22" is listed in front of "README.md" and typing "e22" opened the file! See how to set this up.

Runs on Unix as well as Windows PowerShell.

The colors of the output for different file types/diretory, etc, is defined by the LS_COLORS environment variable (with a set of defaults values).

Install

Homebrew or Linuxbrew

brew install tre-command

Nix

tre is available in the official nixpkgs channel as tre-command. You can use it with your favorite Nix-y way. For example:

nix-env -i tre-command

Windows (Scoop)

scoop install tre-command

Cargo

cargo install tre-command

Pre-built executable

Choose an pre-built executable from the release page that fits your platform to download. Unpack it somewhere you'd like to run it from.

From Source

1. Clone this repository: git clone https://github.com/dduan/tre.git.
2. Ensure you have Rust and Cargo installed. If not, follow instruction here.
3. In the root level of this repo, run cargo build --release.
4. Move target/release/tre to somewhere in your PATH environment variable.

Editor aliasing

tre provides a -e flag that, when used, turns on the "editor aliasing" feature. Some shell configuration will make this work better.

macOS/Linux

By default, the environment variable $EDITOR is used as the editor. If a value following -e is supplied (tre -e emacs instead of tre -e), then the command specified by this value will be used instead of $EDITOR. Update the script in the next section accordingly.

Bash or Zsh

In ~/.bashrc or ~/.zshrc (for example)

tre() { command tre "[email protected]" -e && source "/tmp/tre_aliases_$USER" 2>/dev/null; }

Fish

Create ~/.config/fish/functions/tre.fish:

function tre
  command tre $argv -e; and source /tmp/tre_aliases_$USER ^/dev/null
end

Windows (10+)

Instead of directly executing tre.exe, we'll set up a script that's available in your PATH environment variable. For example, you can add \Users\yourname\bin to your PATH environment variable, and created the script there. When you use tre, this script executes tre.exe, and do some additional work. The content of the script is different for PowerShell and Command Prompt.

By default, the default program known by Windows will be used to open the file. If a value following -e is supplied (tre -e notepad.exe instead of tre -e), then the command specified by this value will be used. Update the scripts in the next section accordingly.

PowerShell

Add a tre.ps1 file:

if (Get-Module PSReadLine) {
  Remove-Module -Force PSReadLine
}
tre.exe $args -e
. $Env:TEMP\tre_aliases_$env:USERNAME.ps1

Command Prompt (CMD.exe)

Add a tre.bat:

@echo off
tre.exe %* -e
call %TEMP%\tre_aliases_%USERNAME%.bat

How it works

The first thing you'll notice is some numbers in front of each file name in tre's output. If pick a number, say, "3", and enter e3 in the shell, the file after "3" will open in your default program (specified by the environment variable EDITOR in macOS/Linux, and picked by Windows).

Everytime tre runs with -e, it updates a file in a temporary directory, and adds an alias for each result it displays. And the additional configuration simply sources this file after the command. You can manually run

in Bash/Zsh/Fish:

source /tmp/tre_aliases_$USER

or

in PowerShell

. $Env:TEMP\tre_aliases_$env:USERNAME.ps1

or

in Command Prompt

call %TEMP%\tre_aliases_%USERNAME%.bat

… instead of configuring your system (if you are that patient!).

License

MIT. See LICENSE.md.