osquery-1/README.md

osquery
======

<p align="center">
<img align="center" src="http://osquery.io/assets/logo-dark.png" alt="osquery logo" width="200"/>

<p align="center">
osquery is an operating system instrumentation framework for OS X and Linux. It makes low-level operating system analytics performant and intuitive. For downloads, and community resources visit<br/> **[http://osquery.io](http://osquery.io/)**

| Platform | Build status |
|---------|-------------|
OS X 10.10      | [![Build Status](http://jenkins.osquery.io/job/osqueryMasterBuildOSX/badge/icon)](http://jenkins.osquery.io/job/osqueryMasterBuildOSX/)
CentOS 6.5      | [![Build Status](http://jenkins.osquery.io/job/osqueryMasterBuildCentOS6/badge/icon)](http://jenkins.osquery.io/job/osqueryMasterBuildCentOS6/)
CentOS 7.0      | [![Build Status](http://jenkins.osquery.io/job/osqueryMasterBuildCentOS7/badge/icon)](http://jenkins.osquery.io/job/osqueryMasterBuildCentOS7/)
Ubuntu 12.04 LTS | [![Build Status](http://jenkins.osquery.io/job/osqueryMasterBuildUbuntu12/badge/icon)](http://jenkins.osquery.io/job/osqueryMasterBuildUbuntu12/)
Ubuntu 14.04 LTS | [![Build Status](http://jenkins.osquery.io/job/osqueryMasterBuildUbuntu14/badge/icon)](http://jenkins.osquery.io/job/osqueryMasterBuildUbuntu14/)

#### What is osquery?

osquery exposes an operating system as a high-performance relational database. This allows you to write SQL-based queries to explore operating system data. With osquery, SQL tables represent abstract concepts such as running processes, loaded kernel modules, open network connections, browser plugins, hardware events or file hashes.

SQL tables are implemented via a simple plugin and extensions API. A variety of tables already exist and more are being written: [http://osquery.io/tables](http://osquery.io/tables). To best understand the expressiveness that is afforded to you by osquery, consider the following SQL queries:

List the the users:
```sql
select * from users;
```

Check the processes that have a deleted executable:
```sql
SELECT * FROM processes where on_disk = 0;
```

Get the process name, port, and PID, which are listening on all interfaces:
```sql
SELECT DISTINCT process.name, listening.port, process.pid
FROM processes AS process
JOIN listening_ports AS listening ON process.pid = listening.pid
WHERE listening.address = '0.0.0.0';
```

Find every OS X LaunchDaemon that launches an executable and keeps it running:
```sql
SELECT name, program || program_arguments AS executable
FROM launchd
WHERE
  (run_at_load = 'true' AND keep_alive = 'true')
AND
  (program != '' OR program_arguments != '');
```

Check for ARP anomalies from the host's perspective:
```sql
SELECT address, mac, mac_count 
FROM
  (SELECT address, mac, count(mac) AS mac_count FROM arp_cache GROUP BY mac) 
WHERE mac_count > 1;
``` 

These queries can be:
* performed on an ad-hoc basis to explore operating system state using the [osqueryi](https://github.com/facebook/osquery/wiki/using-osqueryi) shell
* executed via a [scheduler](https://github.com/facebook/osquery/wiki/using-osqueryd) to monitor operating system state across a set of hosts
* launched from custom applications using osquery Thrift APIs

#### Downloads / Install

For latest stable and nightly builds for OS X and Linux (deb/rpm), as well as yum and apt repository information visit [http://osquery.io/downloads](http://osquery.io/downloads/).

##### OS X (Homebrew)

The easiest way to install osquery on OS X is via Homebrew. Check the [Homebrew](http://brew.sh/) homepage for installation instructions.

```bash
brew update
brew install osquery
# Or update!
brew upgrade osquery
```

##### Building from source

[Building](https://github.com/facebook/osquery/wiki/building-the-code) osquery from source is encouraged! Join our developer community by giving us feedback in Github issues or submitting pull requests!

#### Vulnerabilities

Facebook has a [bug bounty](https://www.facebook.com/whitehat/) program that includes osquery. If you find a security vulnerability in osquery, please submit it via the process outlined on that page and do not file a public issue. For more information on finding vulnerabilities in osquery, see a recent blog post about [bug-hunting osquery](https://www.facebook.com/notes/facebook-bug-bounty/bug-hunting-osquery/954850014529225).

#### Learn more

Read the [launch blog post](https://code.facebook.com/posts/844436395567983/introducing-osquery/) for background on the project.

If you're interested in learning more about osquery, visit the [wiki](https://github.com/facebook/osquery/wiki) and browse our RFC-labeled Github issues.