Simple QR Code Generator

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Introduction

QRSimple is a command line QR code generator, which outputs QR codes only to the console. It operates in one of three modes:

• If passed no arguments, it reads standard input.
• If passed a valid filename, it reads data from that file.
• If passed anything else, it uses that text.

$ qrsimple https://en.wikipedia.org/wiki/QR_code

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  █ ███ █ ▄  █ ▀▀▄ ▄ ▄▀ █ ███ █
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   ▀    ▀ ██   █▄▄▄██▀█▀▀▀███▄▄
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