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description: Install Pantheon from binary distribution
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# Install Binary Distribution
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## Mac OS with Homebrew
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### Prerequisites
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* [Homebrew](https://brew.sh/)
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### Install Using Homebrew
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```bash
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brew tap pegasyseng/pantheon
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brew install pantheon
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```
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Display Pantheon command line help to confirm installation:
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```bash
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pantheon --help
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```
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## Windows with Chocolatey
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### Prerequisites
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* [Chocolatey](Install-Chocolatey.md)
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!!! note
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Close and reopen the terminal after installing Chocolatey.
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### Install Using Chocolatey
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To install from [Chocolatey package](https://chocolatey.org/packages/pantheon/):
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```bat
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choco install pantheon
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```
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!!! note
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The Chocolatey installation installs JDK11 and updates the system `JAVA_HOME` and `PATH` environment variables.
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If your user `JAVA_HOME` or `PATH` environment variables are also set, update or remove these.
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If you do not want your system settings updated by Chocolatey, [install the packaged binaries](#linux-unix-windows-without-chocolatey)
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instead and update the environment variables as required.
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Display Pantheon command line help to confirm installation:
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```bat
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pantheon --help
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```
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## Linux / Unix / Windows without Chocolatey
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### Prerequisites
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* [Java JDK](http://www.oracle.com/technetwork/java/javase/downloads/index.html)
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!!!attention
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Pantheon requires Java 8+ to compile; earlier versions are not supported.
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Pantheon is currently supported only on 64-bit versions of Windows, and requires a 64-bit version of JDK/JRE.
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We recommend that you also remove any 32-bit JDK/JRE installations.
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From v1.2, Pantheon will require Java 11. That is, Pantheon on Java 8 will no longer be supported.
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!!! note "Linux Open File Limit"
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If synchronizing to MainNet on Linux or other chains with large data requirements, increase the maximum
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number of open files allowed using `ulimit`. If the open files limit is not high enough, a `Too many open files` RocksDB exception occurs.
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### Install from Packaged Binaries
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Download the Pantheon [packaged binaries](https://bintray.com/consensys/pegasys-repo/pantheon/_latestVersion#files).
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Unpack the downloaded files and change into the `pantheon-<release>` directory.
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Display Pantheon command line help to confirm installation:
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```bash tab="Linux/macOS"
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bin/pantheon --help
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```
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```bat tab="Windows"
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bin\pantheon --help
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```
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