Commands by stanishjohnd (3)

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Validate date, also a date within a leap year
Important to know: a valid date will return 0, otherwise 1!

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

Convert numbers to SI notation
converts any number on the 'stdin' to SI notation. My version limits to 3 digits of precious (working with 10% resistors).

Run a command when a file is changed

Convert .flv to .3gp
Download YouTube videos as .flv and convert them to .3gp for your mobile phone.

list files recursively by size

Transfers clipboard content from one OS X machine to another
This uses ssh to transfer the contents of one Mac's clipboard to another's. This only works with plain text, sadly. Trying to transfer images will just clear out the remote machine's clipboard, and rich text will be converted to plain text. Using the "Remote Login" must be enabled on the remote machine (via System Preferences' Sharing panel) for this to work.

Find all videos under current directory using MIME a.k.a not using extension
Videos are found using their MIME type. Thus no need to for an extension for the video file. This is a efficent version of "jnash" cmd (4086). Thanks for jnash. This cmd will only show video files while his cmd show files having "video" anywhere in path.

multiline data block parse and CSV data extraction with perl
extract data in multiline blocks of data with perl pattern matching loop

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"


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