Update entries for Beej's Guides

books/free-programming-books-dk.md

@@ -9,6 +9,7 @@
 
 ### C
 
+* [Beej's Guide til Netvarksprogrammierung](https://web.archive.org/web/20190701062226/http://artcreationforever.com/bgnet.html) - B. Hall (HTML)
 * [Programmering i C](http://people.cs.aau.dk/~normark/c-prog-06/pdf/all.pdf) - Kurt Nørmark (PDF)
 
 

books/free-programming-books-hu.md

@@ -37,6 +37,11 @@
 * [Arduino programozási kézikönyv](http://avr.tavir.hu) - Brian W. Evans írása alapján fordította, kiegészítette és frissítette Cseh Róbert (PDF - regisztráció szükséges)
 
 
+### C
+
+* [Beej útmutatója a hálózati programozáshoz - Internet Socketek használatával](https://web.archive.org/web/20180630204236/http://weknowyourdreams.com/bgnet-sw.html) - B. Hall (HTML)
+
+
 ### <a id="cpp"></a>C++
 
 * [Fejlett programozási technikák](http://www.ms.sapientia.ro/~manyi/teaching/c++/cpp.pdf) - Antal Margit (PDF)

books/free-programming-books-langs.md

@@ -426,7 +426,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [An Introduction to C & GUI Programming](https://magpi.raspberrypi.com/books/c-gui-programming) - Simon Long (PDF)
 * [Bare-metal programming for ARM](https://github.com/umanovskis/baremetal-arm) - Daniels Umanovskis [(PDF)](http://umanovskis.se/files/arm-baremetal-ebook.pdf)
 * [Beej's Guide to C Programming](http://beej.us/guide/bgc/) - B. Hall (HTML, PDF)
-* [Beej's Guide to Network Programming - Using Internet Sockets](http://beej.us/guide/bgnet/) - B. Hall
+* [Beej's Guide to Network Programming - Using Internet Sockets](http://beej.us/guide/bgnet/) - B. Hall (HTML, PDF)
 * [Beej's Guide to the GNU Debugger (GDB)](http://beej.us/guide/bggdb/) - B. Hall (HTML)
 * [Build Your Own Lisp](http://www.buildyourownlisp.com) - Daniel Holden
 * [C Elements of Style](http://www.oualline.com/books.free/style/) - Steve Oualline

books/free-programming-books-ro.md

@@ -13,6 +13,11 @@
 * [Ajax](http://etutoriale.ro/articles/1483/1/Tutorial-Ajax/)
 
 
+### C
+
+* [Ghidul Beej pentru Programarea in Retea - Folosind socket de internet](https://web.archive.org/web/20180710112954/http://weknowyourdreams.com/beej.html)
+
+
 ### HTML
 
 * [HTML](http://tutorialehtml.com/ro/introducere-in-html/)

books/free-programming-books-sr.md

@@ -0,0 +1,8 @@
+### Index
+
+* [C](#c)
+
+
+### C
+
+* [Beej-ov vodič za mrežno programiranje - Korištenje Internet soket-a](https://web.archive.org/web/20181008134854/http://users.teol.net:80/~mvlado/sockets/) - B. Hall (HTML)

books/free-programming-books-subjects.md

@@ -566,6 +566,7 @@ Books that cover a specific programming language can be found in the  [BY PROGRA
 ### Networking
 
 * [An Introduction to Computer Networks](http://intronetworks.cs.luc.edu) (HTML, PDF, Kindle)
+* [Beej's Guide to Network Programming - Using Internet Sockets](https://www.beej.us/guide/bgnet/) - B. Hall (HTML, PDF)
 * [Bits, Signals, and Packets: An Introduction to Digital Communications and Networks](http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-02-introduction-to-eecs-ii-digital-communication-systems-fall-2012/readings/)
 * [Code Connected vol.1](http://hintjens.wdfiles.com/local--files/main%3Afiles/cc1pe.pdf) (PDF) (book on ZeroMQ)
 * [Computer Networking : Principles, Protocols and Practice](http://cnp3book.info.ucl.ac.be/1st/html/index.html) (HTML, ePub, PDF, Kindle)