http://code.activestate.com/recipes/langs/bash/tags/binary/2013-01-29T22:07:57-08:00ActiveState Code Recipes2013-01-29T22:07:57-08:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/578441-a-building-block-bash-binary-file-manipulation/

<p style="color: grey"> Bash recipe 578441 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/apple/">apple</a>, <a href="/recipes/tags/bash/">bash</a>, <a href="/recipes/tags/binary/">binary</a>, <a href="/recipes/tags/linux/">linux</a>, <a href="/recipes/tags/macbook_pro/">macbook_pro</a>, <a href="/recipes/tags/script/">script</a>, <a href="/recipes/tags/shell/">shell</a>). Revision 2. </p> <p>Apologies for any typos, and IF this has been done before...</p> <p>The code generates a 256 byte binary file of _characters_ 0x00 to 0xFF for general usage and generates another binary file manipulated in a basic way.</p> <p>The for loops in the code are purely for DEMO purposes only.</p> <p>This is Public Domain and you may do with it as you please. I have uploaded it elsewhere too...</p> <p>Watch for wordwrapping, etc and read the code for more information...</p> <p>Enjoy finding simple solutions to often very difficult problems...</p> <p>Bazza, G0LCU...</p>

2013-01-11T18:31:03-08:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/578413-a-shell-binary-to-hexadecimal-to-decimal-demo/

<p style="color: grey"> Bash recipe 578413 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/apple/">apple</a>, <a href="/recipes/tags/bash/">bash</a>, <a href="/recipes/tags/binary/">binary</a>, <a href="/recipes/tags/decimal/">decimal</a>, <a href="/recipes/tags/demo/">demo</a>, <a href="/recipes/tags/hexadecimal/">hexadecimal</a>, <a href="/recipes/tags/linux/">linux</a>, <a href="/recipes/tags/macbook_pro/">macbook_pro</a>, <a href="/recipes/tags/shell/">shell</a>, <a href="/recipes/tags/terminal/">terminal</a>). </p> <p>This little DEMO may be common knowledge to the big guns but not to amateurs like myself, so......</p> <p>This is an Apple Macbbok Shell/Terminal DEMO shell script to show how to:-</p> <p>1) Create a binary file... 2) Save it to your DEFAULT /directory/drwawer/folder/... 3) Display a hexadecimal dump of said binary file to prove that it is binary... 4) Select a single BYTE of that file and save it as an ASCII text decimal _number_, also to your DEFAULT /directory/drawer/folder/... 5) Read this ASCII text decimal number back in again... 6) Add this string representation to a number... 7) Stop...</p> <p>It was intended purely for OSX 10.7.5 and above using the default terminal and shell...</p> <p>It does work on many Linux flavours and shells/terminals also however.</p> <p>Written so the anyone can understand what is going on.</p> <p>The two files generated and saved in this DEMO to your DEFAULT /directory/drawer/folder/ are:-</p> <p>BinaryString.dat BinaryString.txt</p> <p>This WILL lead to something very unusual in the not too distant future...</p> <p>This is Public Domain and you may do with it as you wish...</p> <p>Enjoy finding simple solutions to often very difficult problems...</p> <p>Bazza, G0LCU...</p>