Free Knowledge Resources


Linux Manual Pages


Free Software * Books

Source Code

Free Media

Linux

tcp-env(1)


NAME

   tcp-env - set up TCP-related environment variables

SYNOPSIS

   tcp-env [ -rR ] [ -ttimeout ] program [ arg ...  ]

DESCRIPTION

   The  input  for  tcp-env  must  be a TCP connection.  tcp-env finds out
   information about that connection, puts the  information  into  several
   environment  variables as described in tcp-environ(5), and runs program
   with the given arguments.

   Usually tcp-env is run from  inetd.   It  might  instead  be  run  from
   another server that already sets up the right environment variables; if
   PROTO is set to TCP when tcp-env is invoked, tcp-env assumes  that  all
   the  other variables are set up properly, and it does not check whether
   the input is a TCP connection.

OPTIONS

   -r     (Default.)  Attempt to  obtain  TCPREMOTEINFO  from  the  remote
          host.

   -R     Do not attempt to obtain TCPREMOTEINFO from the remote host.

   -ttimeout
          Give  up  on  the TCPREMOTEINFO connection attempt after timeout
          seconds.  Default: 30.

SEE ALSO

   tcp-environ(5), inetd(8)

                                                                tcp-env(1)



Opportunity


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.



Education


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.


birds banner