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Somebody helped me run a java program with the following (working) line of code. The zookeeper-3.4.5.jar exists in the working directory. What it is the meaning of the .: syntax here? Does that just mean current directory? I would have written this as java -cp "zookeeper-3.4.5.jar" but I'm not 100% sure this would do the same thing as the line below.

java -cp .:zookeeper-3.4.5.jar org.zookeeper.LsGroup
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The . is the current directory. The : is the path separator, used to separate multiple paths in a single option/variable under *nix. This command line therefore adds both . and zookeeper-3.4.5.jar to the Java classpath.

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