UPDATE: As of build #204, you can use /version to get your build. If it doesn't work, use the methods below. It seems people don't know how to get their current CraftBukkit build, and I knew of a quick and (relatively) easy way to find it. Download a compression program 7zip - This is the one I use, it works well, and therefore I recommend it. http://www.7-zip.org/WinRAR - http://www.rarlab.com/WinZip - http://www.rarlab.com/PeaZip - http://www.peazip.org/IZArc - http://www.izarc.org/ After downloading and installing a compression program, use it to open your CraftBukkit .jar file Once it is open, you should see 5 folders: comjoptsimpleMETA-INFnetorg and two files: font.txtnull You need to open the META-INF folder and then drag/extract the MANIFEST.MF file to a location on your computer (It is probably easiest for you to use the desktop). Open MANIFEST.MF in a text editor, and you should see something similar to this: Code: Manifest-Version: 1.0 Build-Jdk: 1.6.0_22 Built-By: bamboo Build-Version: git-Bukkit-something-188 Created-By: Apache Maven Main-Class: org.bukkit.craftbukkit.Main Archiver-Version: Plexus Archiver The line you are looking for is Build-Version: git-Bukkit-something-188 The 188 contains your build number. Newer builds of Bukkit will contain the build version in this format: Implementation-Version: git-Bukkit-0.0.0-323-g29e96e1-b241 Where b241 is Build 241. Linux To find the build on a linux server, there is a much easier way - Just use this command: Code: zgrep -i version craftbukkit.jar This is confirmed to be working on Ubuntu, but should work on other distro's too.