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Getting Started

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In addition to the I2P download, you need to install Java if you do not have it already installed. I2P requires Java Runtime Version 7 or higher.(Oracle,OpenJDK, orIcedTeaJava Version 7 or 8 recommended,except Raspberry Pi: OpenJDK 9 for ARM,PowerPC: IBM Java SE 7 or 8)
Determine your installed Java version hereor type java -version at your command prompt.

Windows: Java 8 is recommended. Java 9 or higher may not work.

Release Notes

Pick your I2P Bundle

When you download the I2P software bundle, you get everything you need to connectand start participating in the I2P network and community. It even includes basicapplications for every user, like e-mail, bittorrent, and a basic I2P site foryou to personalize and share.

After you've installed, a set up wizard will help you configure a fewimportant things like how much bandwidth you would like to share while yourrouter begins to make connections to the network. After the set up wizard iscomplete, you will be directed to the console home page where you can accessthe rest of the applications or configure, monitor, or troubleshoot yourI2P connections.

Download the file and double-click to run it.

The most reliable way to launch the installer is from a terminal like this: java -jar i2pinstall_0.9.47.jar. This will launch the GUI installer. Depending on how your computer is set up, you may be able to start the installer by double-clicking the 'i2pinstall_0.9.47.jar' file or right-clicking the file and selecting 'Open with Java'. Unfortunately, this behaviour is difficult to predict.

Command line (headless) install:

I2P can also be installed in a terminal environment, which may be especially useful for servers, containers, or certain virtual machines. If you wish to use the installer without a GUI, you can use the command java -jar i2pinstall_0.9.47.jar -console to follow the install procedure in your terminal.

This is a more familiar drag-and-drop style installer for OSX, which includes a Dock icon to easily inform you of I2P's status. Beta.

Double-click on the file, then drag and drop the launcher into your Applications folder.

The most reliable way to launch the installer is from a terminal like this: java -jar i2pinstall_0.9.47.jar. This will launch the GUI installer. Depending on how your computer is set up, you may be able to start the installer by double-clicking the 'i2pinstall_0.9.47.jar' file or right-clicking the file and selecting 'Open with Java'. Unfortunately, this behaviour is difficult to predict.

Command line (headless) install:

I2P can also be installed in a terminal environment, which may be especially useful for servers, containers, or certain virtual machines. If you wish to use the installer without a GUI, you can use the command java -jar i2pinstall_0.9.47.jar -console to follow the install procedure in your terminal.

I2P is available in the official repositories for Ubuntu Bionic and later, and Debian Buster and Sid. However, Debian Buster and Ubuntu Bionic (LTS) distributions will have older I2P versions. If you are not running Debian Sid or the latest Ubuntu release, use our Debian repo or Launchpad PPA to ensure you're running the latest I2P version.

I2P is now available as a Docker package from the Docker Hub. You may retrieve the image by running the 'docker pull' command.

Docker Hub

Alternately, you can fetch the source from monotone or via Git from git.repo.i2p or Github.
Run (tar xjvf i2psource_0.9.47.tar.bz2 ; cd i2p-0.9.47 ; ant pkg) then either run the GUI installer or headless install as above.

Android source is in monotone and on Github. Android builds require the I2P source. See the documentation in the Android source for additional build requirements and instructions.

The files are signed by zzz,whose key is here.The Windows installer is signed by zlatinb,whose key is here.The Mac OS X native installer is signed by mikalv (meeh) with his Apple Developer ID certificate,whose key is here.

Updates from earlier releases:

Both automatic and manual upgrades are available for the release.

If you are running 0.7.5 or later, your router should detect thenew release. To upgrade simply click the 'Download Update' button on your router consolewhen it appears.

Since 0.9.23, some releases are signed by str4d, whose signing key has been in the routersince 0.9.9. Routers older than 0.9.9 will fail to verify update files signed by str4d,and will need to be manually updated using the process below.

1. Download the file to your I2P installation directory and rename as i2pupdate.zip. (alternately, you can get the source as above and run 'ant updater', then copy the resulting i2pupdate.zip to your I2P installation directory). You do NOT need to unzip the file.
2. Click 'Restart'
3. Grab a cup of coffee and come back in 11 minutes

The file is signed by zzz,whose key is here.

Previous Releases

Previous releases are available on Google Codeand Launchpadand within the I2P network on echelon.i2p.xyz.

The type of installation depends on your requirement and the platform that you choose to install.

Depending on the requirement, download and install JDK or JRE according to the information provided in Table 1-1:

Table 1-1 Installation Requirements and Related Tasks

Requirement	Tasks
Run Java programs but not develop them	Download and install the JRE for your platform
Develop Java applications	Download and install the Java Development Kit (JDK) for your platform. The JDK includes the JRE, so you do not have to download both separately.
Use JRE on a server but do not want the ability to run rich internet applications (RIAs)	Download the Java SE Server JRE for your platform

Version-String Format

To understand the version-string scheme that is used to distinguish various JDK and JRE releases, see Version-String Format.

Installation

JDK, JRE, and Server JRE can be installed on the following platforms:

You can download JDK and JRE from Java SE Development Kit 9 Downloads page.

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For supported processors and browsers, see Oracle JDK and JRE Certified System Configurations.

Oracle Solaris

• Installation of JDK and JRE on Oracle Solaris: Instructions include installation from Image Packaging System (IPS) and Archive binaries.

• Installing Server JRE 9 on Oracle Solaris: Instructions include steps to install Server JRE.

Microsoft Windows

• Installation of the JDK and the JRE on Microsoft Windows Platforms: Instructions include steps to install JDK and JRE on 64-bit Microsoft Windows operating systems.

Linux

• Installation of the JDK and JRE on Linux Platforms: Instructions include installation from Archive binaries and Red Hat Package Manager (RPM).

• Installation of Server JRE 9 on Linux: Instructions include steps to install Server JRE on Linux.

• Manual Installation and Registration of the Java Plug-in on Linux: Instructions include steps to manually install the JRE plug-in, which is required to run Java applets in a browser. This procedure does not apply to Server JRE installation.

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macOS

The installation of JRE 9 and JDK 9 requires macOS 10.10 or later.

• Installation of the JDK and the JRE on macOS: Instructions include steps to install JDK and JRE on macOS platform.

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To learn about the files and directories that are created after JDK and JRE installation, see Installed Directory Structure of JDK and JRE.