inchstr, inchnstr, winchstr, winchnstr, mvinchstr, mvinchnstr,
   mvwinchstr, mvwinchnstr - get a string of characters (and attributes)
   from a curses window


   #include <curses.h>

   int inchstr(chtype *chstr);
   int inchnstr(chtype *chstr, int n);
   int winchstr(WINDOW *win, chtype *chstr);
   int winchnstr(WINDOW *win, chtype *chstr, int n);
   int mvinchstr(int y, int x, chtype *chstr);
   int mvinchnstr(int y, int x, chtype *chstr, int n);
   int mvwinchstr(WINDOW *win, int y, int x, chtype *chstr);
   int mvwinchnstr(WINDOW *win, int y, int x, chtype *chstr, int n);


   These  routines  return  a  NULL-terminated array of chtype quantities,
   starting at the current cursor position in the named window and  ending
   at  the  right  margin of the window.  The four functions with n as the
   last argument, return a leading substring at  most  n  characters  long
   (exclusive of the trailing (chtype)0).  Constants defined in <curses.h>
   can be used with the & (logical AND) operator to extract the  character
   or   the   attribute   alone  from  any  position  in  the  chstr  [see


   All routines return the integer ERR upon failure and an  integer  value
   other  than  ERR  upon  successful completion (the number of characters
   retrieved, exclusive of the trailing 0).

   No error conditions are defined.  If the chstr parameter  is  null,  no
   data is returned, and the return value is zero.

   Functions  with  a  "mv"  prefix  first perform a cursor movement using
   wmove, and return an error if the position is outside the window, or if
   the window pointer is null.


   Note  that  all routines except winchnstr may be macros.  SVr4 does not
   document whether the result string  is  zero-terminated;  it  does  not
   document  whether  a length limit argument includes any trailing 0; and
   it does not document the meaning of the return value.


   These functions are described in the XSI Curses standard, Issue 4.   It
   is  no more specific than the SVr4 documentation on the trailing 0.  It
   does specify that the successful return of the functions is OK.


   ncurses(3NCURSES), inch(3NCURSES).

   Comparable functions  in  the  wide-character  (ncursesw)  library  are
   described in in_wchstr(3NCURSES).



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.