Commands by serverwholesale (1)

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blktrace - generate traces of the i/o traffic on block devices
blktrace is a block layer IO tracing mechanism which provide detailed information about request queue operations up to user space. blkparse will combine streams of events for various devices on various CPUs, and produce a formatted output the the event information. It take the output of above tool blktrace and convert those information into fency readable form.

list all opened ports on host

Create a video screencast (capture screen) of screen portion, with audio (the audio you hear, not your mic)
Errors in output don't matter. Stop recording: ctrl-c. Result playable with Flash too. IMPORTANT: Find a Pulse Audio device to capture from: pactl list | grep -A2 'Source #' | grep 'Name: ' | cut -d" " -f2

regex for turning a URL into a real hyperlink (i.e. for posting somewhere that accepts basic html)
This should work with anything://url.whatever etc etc ;)

Convert YAML to JSON
Converts YAML file to JSON. Note that you'll need to install PyYAML. Also some YAML data types (like dates) are not supported by JSON).

camelcase to underscore
Convert a camelCase string into snake_case. To complement senorpedro's command.

Get the full path to a file
Useful in scripts when the file is passed in as an argument. Eg. $ filepath=$(realpath $1)

Create a tar of directory structure only

list files recursively by size

Commandline document conversion with Libreoffice
In this example, the docx gets converted to Open Document .odt format. For other formats, you'll need to specify the correct filter (Hint: see "Comments" link below for a nice list).

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