# Installation on Windows

## Prerequisite

**Java 8 (or +)** must be installed, that's all.

You can check it with the command \
    `X:\>`**`java -version`**

## Installation

### 1) Download

With your browser go to "[**Download**](https://www.telosys.org/download/telosys-cli/index.html)" page

Choose the "**Latest version**" and ckick "**Download**" button.

A ZIP file "telosys-cli-x.x.x-xxx.zip" will be downloaded.

### 2) Unzip

Copy the "zip file" in the directory where you want to install Telosys.

Use your favorite zip tool to unzip "telosys-cli-x.x.x-xxx.zip" in this directory (eg "Extract Here" )

### 3) Update 'PATH' environment variable

To be able to launch Telosys from any location, just add its directory to the "**PATH**".

* Open the Start Search, type in “**variable**”, \
  and choose “**Edit the system environment variables**”:
* In the "**System Properties**" window : 

  click the "**Advanced**" tab, 

  then click the "**Environment Variables**" button.
* In the "**Environment Variables**" window : 

  in the "**System variables**" section 

  select the "**Path**" variable and click the "**Edit**" button
* Add the **Telosys directory** in the **PATH** variable

### 4) Run Telosys

Now if the PATH variable is set correctly you can launch Telosys from any directory.

Open a command window ( open the Start Search and enter "**cmd**" )

Move to the directory where you want to use Telosys\
    `X:\>`**`cd myproject`**

Launch Telosys-CLI using **`telosys`** command (`telosys.bat`)\
or **`tt`** command (`tt.bat`)  for older versions (before version 4.2.0)\
&#x20;  `X:\myproject>`**`telosys`**<br>

### 5) You can also create a shortcut on your desktop

For more convenience you can create a shortcut on the desktop

To launch Telosys in its own directory :  \
&#x20;   `X:\telosys-dir\telosys.bat`

To launch Telosys in a specific directory (eg a project directory) use '**-h**' option : \
&#x20;   `X:\telosys-dir\telosys.bat -h X:\myproject-dir`

You can use the "telosys.ico" file as the shortcut icon.