"$d_SysMaint""graphs, plots/0_qrencode notes.txt
www.BillHowell.ca  15Dec2020 initial



08********08
15Dec2020  
Try : 
qrencode  --output="$d_PROJECTS""Investments/BitCoin/201215 Temple Food Store.png"  "1EJgEKkMpyrmmNbAzPXdRFgmpNSCj6k6pE"  
>> simple, fast, effective


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LMDE -> Software Manager -> search "QR code" ->  Qrencode 
man qrencode
NAME
       qrencode - Encode input data in a QR Code and save as a PNG or EPS image.

SYNOPSIS
       qrencode [OPTION]...  [STRING]

DESCRIPTION
       Libqrencode  is a library for encoding data in a QR Code symbol, a kind of 2D symbology that can be scanned
       by handy terminals such as a mobile phone with CCD. The capacity of QR Code is up to 7000  digits  or  4000
       characters, and has high robustness.

       Qrencode  is  a  utility software using libqrencode to encode string data in a QR Code and save as a PNG or
       EPS image.

OPTIONS
       -h, --help
              display help message.

       -o FILENAME, --output=FILENAME
              write image to FILENAME. If '-' is specified, the result will be output to standard output. If -S is
              given,  structured  symbols  are written to FILENAME-01.png, FILENAME-02.png, ... (suffix is removed
              from FILENAME, if specified)

       -s NUMBER, --size=NUMBER
              specify the size of dot (pixel). (default=3)

       -l {LMQH}, --level={LMQH}
              specify error collectin level from L (lowest) to H (highest). (default=L)

       -v NUMBER, --symversion=NUMBER
              specify the version of the symbol. See SYMBOL VERSIONS for more information. (default=auto)

       -m NUMBER, --margin=NUMBER
              specify the width of margin. (default=4)

       -d NUMBER, --dpi=NUMBER
              specify the DPI of the generated PNG. (default=72)

       -t {PNG,EPS,SVG,ANSI,ANSI256,ASCII,ASCIIi,UTF8,ANSIUTF8}
       --type={PNG,EPS,SVG,ANSI,ANSI256,ASCII,ASCIIi,UTF8,ANSIUTF8}
              specify the type of the generated image. (default=PNG)

       -S, --structured
              make structured symbols. Version must be specified.

       -k, --kanji
              assume that the input text contains kanji (shift-jis).

       -c, --casesensitive
              encode lower-case alphabet characters in 8-bit mode. (default)

       -i, --ignorecase
              ignore case distinctions and use only upper-case characters.

       -8, --8bit
              encode entire data in 8-bit mode. -k, -c and -i will be ignored.

       -M, --micro
              encode in a Micro QR Code. (experimental)

       --foreground=RRGGBB[AA]
       --background=RRGGBB[AA]
              specify foreground/background color in hexadecimal notation.  6-digit (RGB) or 8-digit  (RGBA)  form
              are supported.  Color output support available only in PNG and SVG.

       -V, --version
              display the version number and copyrights of the qrencode.






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