Find what is listening on a given port

To find out what application is listening on a given port on Linux, issue following command,

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Check package information installed by Homebrew

After installing a package using Homebrew, you can see the package information right away, it prints out to the stdout, such as: caveats, configuration, dependencies… Somehow, if you forget them, and want to look up the package information, what would you do?

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Config to launch Sublime Text from command-line on Mac OS X

If you are a developer and use Sublime Text frequently, you might want to add Sublime Text to launch from command-line. It depends on your Sublime Text version (2, or 3) to config the symbol alias,

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Fix Docker push authorization required

When pushing Docker images to the registry, you might fail and see this error

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Show color on Rails test reports

By default, the test report of Ruby on Rails looks pretty much boring and it is hard to recognize if any test fails.

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