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# tgenv
[Terragrunt](https://github.com/gruntwork-io/terragrunt) version manager inspired by [tfenv](https://github.com/kamatama41/tfenv)


## Support
Currently tgenv supports the following OSes
- Mac OS X (64bit)
- Linux (64bit)

## Installation

1. Check out tgenv into any path (here is `${HOME}/.tgenv`)

  ```bash
  $ git clone https://github.com/cunymatthieu/tgenv.git ~/.tgenv
  ```

2. Add `~/.tgenv/bin` to your `$PATH` any way you like

  ```bash
  $ echo 'export PATH="$HOME/.tgenv/bin:$PATH"' >> ~/.bash_profile
  ```

  OR you can make symlinks for `tgenv/bin/*` scripts into a path that is already added to your `$PATH` (e.g. `/usr/local/bin`) `OSX/Linux Only!`

  ```bash
  $ ln -s ~/.tgenv/bin/* /usr/local/bin
  ```

## Usage
### tgenv install
Install a specific version of terragrunt  
`latest` is a syntax to install latest version
`latest:<regex>` is a syntax to install latest version matching regex (used by grep -e)

```bash
$ tgenv install 0.12.12
$ tgenv install latest
$ tgenv install latest:^0.9
```

If you use [.terragrunt-version](#terragrunt-version), `tgenv install` (no argument) will install the version written in it.

### tgenv use
Switch a version to use
`latest` is a syntax to use the latest installed version
`latest:<regex>` is a syntax to use latest installed version matching regex (used by grep -e)

```bash
$ tgenv use 0.12.1
$ tgenv use latest
$ tgenv use latest:^0.10
```

### tgenv uninstall
Uninstall a specific version of terragrunt
`latest` is a syntax to uninstall latest version
`latest:<regex>` is a syntax to uninstall latest version matching regex (used by grep -e)

```bash
$ tgenv uninstall 0.12.1
$ tgenv uninstall latest
$ tgenv uninstall latest:^0.9
```

### tgenv list
List installed versions

```bash
% tgenv list
0.12.15
0.12.8
0.10.0
0.9.9
```

### tgenv list-remote
List installable versions

```bash
% tgenv list-remote
0.12.15
0.12.14
0.12.13
0.12.12
0.12.11
0.12.10
0.12.9
0.12.8
0.12.7
0.12.6
0.12.5
0.12.4
0.12.3
0.12.2
0.12.1
0.12.0
0.11.1
0.11.0
0.10.3
0.10.2
0.10.1
0.10.0
0.9.9
...
```

## .terragrunt-version
If you put `.terragrunt-version` file on your project root, tgenv detects it and use the version written in it. If the version is `latest` or `latest:<regex>`, the latest matching version currently installed will be selected.

```bash
$ cat .terragrunt-version
0.9.9

$ terragrunt --version
terragrunt version v0.9.9

Your version of terragrunt is out of date! The latest version
is 0.7.3. You can update by downloading from www.terragrunt.io

$ echo 0.9.9 > .terragrunt-version

$ terragrunt --version
terragrunt v0.12.15

$ echo latest:^0.10 > .terragrunt-version

$ terragrunt --version
terragrunt v0.10.3
```

### Environment Variables

#### TGENV

##### `TGENV_AUTO_INSTALL`

String (Default: true)

Should tgenv automatically install terragrunt if the version specified by defaults or a .terragrunt-version file is not currently installed.

```console
TGENV_AUTO_INSTALL=false terragrunt plan
```

##### `TGENV_DEBUG`

Integer (Default: "")

Set the debug level for TGENV.

* unset/empty-string: No debug output
* set: Bash execution tracing

## Upgrading
```bash
$ git --git-dir=~/.tgenv/.git pull
```

## Uninstalling
```bash
$ rm -rf /some/path/to/tgenv
```

## LICENSE
- [tgenv itself](https://github.com/cunymatthieu/tgenv/blob/master/LICENSE)
- [tfenv ](https://github.com/kamatama41/tgenv/blob/master/LICENSE) : tfenv mainly uses tfenv's source code