optionProcess - this is the main option processing routine


   #include <your-opts.h>
   cc [...] -o outfile infile.c -lopts [...]

   int optionProcess(tOptions * opts, int a_ct, char ** a_v);


   This  is  the  main entry point for processing options.  It is intended
   that this procedure be called once at the beginning of the execution of
   a  program.   Depending  on  options  selected earlier, it is sometimes
   necessary  to  stop  and  restart  option  processing,  or  to   select
   completely different sets of options.  This can be done easily, but you
   generally do not want to do this.

   The number of arguments processed always includes the program name.  If
   one  of  the  arguments  is "--", then it is counted and the processing
   stops.  If an error was encountered and errors  are  to  be  tolerated,
   then the returned value is the index of the argument causing the error.
   A hyphen by itself ("-") will also cause processing to  stop  and  will
   not  be  counted  among the processed arguments.  A hyphen by itself is
   treated  as  an  operand.   Encountering  an   operand   stops   option

   opts   program options descriptor

   a_ct   program arg count

   a_v    program arg vector


   the count of the arguments processed


   Errors will cause diagnostics to be printed.  exit(3) may or may not be
   called.  It depends upon whether or not the options were generated with
   the   "allow-errors"   attribute,   or   if   the   ERRSKIP_OPTERR   or
   ERRSTOP_OPTERR macros were invoked.


   The info documentation for the -lopts library.
   ao_string_tokenize(3),      configFileLoad(3),       optionFileLoad(3),
   optionFindNextValue(3),        optionFindValue(3),       optionFree(3),
   optionGetValue(3),       optionLoadLine(3),        optionMemberList(3),
   optionNextValue(3),      optionOnlyUsage(3),     optionPrintVersion(3),
   optionPrintVersionAndReturn(3),  optionRestore(3),   optionSaveFile(3),
   optionSaveState(3),       optionUnloadNested(3),      optionVersion(3),
   strequate(3),      streqvcmp(3),      streqvmap(3),      strneqvcmp(3),

                              2016-10-30                  optionProcess(3)


Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.

Free Software

Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.

Free Books

The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.


Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.