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1. Fetches nginx and any optional third-party modules and dependencies you specify, such as openssl and PCRE and then configures and builds.

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2. Measures time-to-first-byte in seconds, for single or multiple URLs. Can calculate fastest, slowest & median TTFB values, and optionally log all response headers. Uses curl and the calculation `%{t…

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3. Mutex for distributed tasks, ideally suited for cron tasks that might otherwise run on duplicate servers in a cluster unnecessarily. Uses Mysql's GET_LOCK() function to orchestrate the locks.

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4. Extracts i-frames as jpegs from an rtmp video stream for use with live tweeting

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   # Create a git alias to show all your git aliases

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       git config --global alias.alias "! git config --get-regexp ^alias\. | sed -e s/^alias\.// -e s/\ /\ =\ /"

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   Thanks [Asclepius!](https://stackoverflow.com/a/22183573/391826) 

6. Humanize user-agent strings using the whatismybrowser.com API

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